content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Lagrange's Theorem
September 24th 2009, 09:23 AM #1
Junior Member
Joined
Sep 2009
Posts
34
Let G be a group and H a subgroup of G. Define, for a,b elements of G, a is an equivalence relation to b if a^-1b element of H. Prove that this defines an equivalence relation on G and show that
[a] = aH = {ah,h... | 4 | [
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0.0400390625,
0.0751953125,
-0.03320312... | 37,900 | 37900 | |
definite integral
December 5th 2011, 01:15 PM #1
Member
Joined
Aug 2011
Posts
117
definite integral
I would like to think i have a simple problem. Can you see if i am doing it right?
$\int_2^{\infty}\frac {2} { v^2 - v }\,dv$
assign b = infinity?
Then, bring the 2 to the outside and bring ... | 4 | [
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0.0419921875,
-... | 37,901 | 37901 | |
[SOLVED] High School Quadratic Inequalities
October 1st 2009, 09:13 AM
unstopabl3
[SOLVED] High School Quadratic Inequalities
Q) Use the discriminant 'b^2=-4ac' to solve the following:
i) Find the values of ' k ' for which the following equations have two separate roots.
a) $kx^2+kx+2=0$
Answer is... | 4 | [
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0.078125,
0.036376953125,
-0.037109375,
-0.0810... | 37,902 | 37902 | |
A delicate elementary inequality
up vote 11 down vote favorite
3
The following "piecewise-quadratic" inequality emerged in a joint work of Rom Pinchasi and myself. The inequality is surprisingly delicate, and all our attempts to simplify it made it false. By the
end of the day, we were able to prove the inequality, bu... | 4 | [
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... | 37,903 | 37903 | |
Math Forum: Teacher2Teacher - Q&A #5112
View entire discussion
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From: Pat Ballew (for Teacher2Teacher Service)
Date: Nov 15, 2000 at 00:53:31
Subject: Re: FOIL Method of multiplying polynomials
FOIL is so often used that it seems to be trying to sweep back the tide, but
I continue to try to tell te... | 4 | [
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-0.005218505... | 37,904 | 37904 | |
Math Help
January 6th 2007, 06:45 PM #1
my teacher give me a problem
PRoof that 0.999999........ equals 1
The proof :
0.9999.........=p
9.9999.........=10p
9+0.999.......=10p
9+p =10p
9 =9p
p =1
But I still don't believe that 0.99999........................ = 1
Nothing ... | 4 | [
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-0.0088500... | 37,905 | 37905 | |
How to interpret this question
September 9th 2013, 06:55 PM #1
Junior Member
Joined
May 2010
Posts
63
How to interpret this question (induction)
I have the following question in my textbook, it appears at the end of a section that talks about Mathematical Induction:
Use an induction argument to sho... | 5 | [
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... | 37,906 | 37906 | |
An NP-hard $n$ fold integral
up vote 17 down vote favorite
2
We are given rational numbers $[c_1, c_2, \ldots, c_n]$ and $v$ from the interval $[0,1]$.
Consider the $n$-fold integral $$ J = \int_{\theta_1 \in I_1, \theta_2 \in I_2 \ldots, \theta_n \in I_n} d\theta_n\ldots d\theta_2 d\theta_1 $$ whose intervals are de... | 4 | [
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Cardinality
April 22nd 2009, 02:15 PM #1
Cardinality
Let A be a non-empty set. Consider F = {f : A → {0, 1}}, the set of all functions on A with values in {0, 1}. Consider the function g : P (A) → F , B → X_B , where X_B is the characteristic
function of the subset B ⊆ A: X_B(a) = 1, if a∈B, and X_B(a) = 0, i... | 4 | [
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... | 37,908 | 37908 | |
2nd Order homogeneous diff equation
January 28th 2010, 09:38 AM
CorruptioN
2nd Order homogeneous diff equation
Hi Guys,
I'm having a bit of trouble with a diff equation, I've never dealt with anything quite as complicated as it before and have no idea what to do.
I've been given the equation $m x\prime... | 5 | [
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A problem on convex geometry
up vote 11 down vote favorite
2
Consider a convex body $K \subset \mathbb{R}^n$ containing the origin in its interior. Although the body is not necessarily symmetric, let us say that two points in its boundary $\partial K$ are
antipodal if the origin lies in the segment that joins them.
Q... | 5 | [
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Area of an Ellipse without using Calculus
Date: 11/28/97 at 11:56:35
From: Vinay
Subject: How do you find the area of an oval
How do you find the area of an oval?
Date: 12/04/97 at 13:13:34
From: Doctor Mark
Subject: Re: How do you find the area of an oval
Hi Vinay,
I'm hoping that by "oval" you mean "ellipse," ... | 4 | [
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eek
April 11, 2004
This Week's Finds in Mathematical Physics (Week 205)
John Baez
This week I'd like to say more about number theory, but first - here's the most fun book on astronomy I've ever seen:
1) James B. Kaler, The Hundred Greatest Stars, Copernicus Books (Springer Verlag), New York, 2002.
It's just what t... | 4 | [
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Finding x- and y-intercepts of a parabola.
August 1st 2011, 10:00 AM
David Green
Finding x- and y-intercepts of a parabola.
I am asked to use algebra to find the x and y intercepts from the following equation;
y = - x^2 + 3x + 8
2
Note; - x^2 above means - x^2 and - 2, I can't get the minus sign in... | 4 | [
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... | 37,913 | 37913 | |
Help with evaluating sine
October 10th 2009, 05:26 PM #1
Junior Member
Joined
Apr 2009
Posts
38
Help with evaluating sine
I have the function
$f:[-\pi,\pi] \rightarrow R, f(x) = \sin 3(x+ \frac{\pi}{4})$
and I need to find the endpoints by subbing in $-\pi$ and $\pi$
$f(-\pi) = \sin 3(-\pi ... | 4 | [
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Taylor series for multivariable
November 5th 2010, 09:20 PM #1
Senior Member
Joined
Feb 2008
Posts
297
Taylor series for multivariable
Find the Taylor series for $f(x,y)=\log(4x-3y)$, up to and including the quadratic terms about the point $P=(1,1)$
Can someone check my working:
$f(1,1)=0$
... | 5 | [
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Showing that a function satisfies an ODE
February 22nd 2011, 12:49 PM #1
Newbie
Joined
Jan 2011
Posts
16
Showing that a function satisfies an ODE
Hi, I have the following problem and I am stuck... Thanks for any help you can give me!
The problem says:
The atmospheric pressure p>0 decreases with... | 4 | [
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-... | 37,916 | 37916 | |
Some stuff :P
April 19th 2006, 12:42 PM #1
Member
Joined
Apr 2006
Posts
85
Some stuff :P
Like this (Everything in bolded is the questions, and just give the answer. If you have time, steps too, but it is not required) :
(Write the following in algebraic expression)
Find the sum of the squares o... | 4 | [
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0.007781982421875,
0.03369140625,
0.01904296875,
-0.083984375,
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0.014404296875,
0.0441894... | 37,917 | 37917 | |
Ciência e Engenharia dos Materiais (CAP06) - Solution Capitulo 06
THE SCIENCE AND...
(Parte 1 de 2)
6 Mechanical Properties and Behavior
6–24A850-lb force is applied to a 0.15-in. diameter nickel wire having a yield strength of 45,0 psi and a tensile strength of 5,0 psi. Determine (a) whether the wire will plastical... | 5 | [
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0.025024414... | 37,918 | 37918 | |
Prime Divisibility Proof
March 17th 2011, 02:01 PM #1
Member
Joined
Nov 2010
Posts
86
Prime Divisibility Proof
Let m,n be elements of the Natural numbers. Prove that if m divides n and p is a prime factor of n that is not a prime factor of m, then m divides n/p
The following facts can be used:
... | 5 | [
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... | 37,919 | 37919 | |
Explicit indecomposable monomorphism of finitely generated non-indecomposable Abelian groups.
up vote 0 down vote favorite
This question is a follow-up of the question I asked here.
Can you write down an explicit example of a monomorphism of finitely generated Abelian groups which is an indecomposable object in the c... | 5 | [
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Find the basis of kernal and image of a transformation
October 31st 2012, 01:55 PM
tttcomrader
Find the basis of kernal and image of a transformation
Suppose that n is a positive integer, and let the transformation $T:C(x) \rightarrow C(x)$ be defined by $T(P(x))=xp'(x)-np(x) \ \ \ \ \ p(x) \in C(x)$ where C(x) ... | 5 | [
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... | 37,921 | 37921 | |
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Topic: Area of circle to its circumference is a constant ... | 5 | [
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0.009948... | 37,922 | 37922 | |
Intuition for Levi-Civita connection via Hamiltonian flows
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
A Euclidean metric on a manifold $X$ defines a function on the symplectic space $T^*X$ whose Hamiltonian flow gives ... | 4 | [
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0.0390625,
-... | 37,923 | 37923 | |
Finding Zeroes
April 6th 2010, 01:17 PM #1
Member
Joined
Nov 2009
Posts
169
Finding Zeroes
Let $N \in \mathbb{N}$. Show that for $s \in \mathbb{C}$ the function $f(s) = \sum_{k=0}^N \frac{(-1)^k {N \choose k}}{k+s}$ has no zeroes.
I tried, but its hard to see what is the numerator in that case, sinc... | 5 | [
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... | 37,924 | 37924 | |
Driving a car
September 5th 2013, 08:34 AM #1
Newbie
Joined
Sep 2013
From
Horten
Posts
4
Hey people! I got a problem here I'm stuck on:
A car is driving at night along a level, curved road. It starts in the origin, the equation of the road is y = x^2, and the car's x-coordinate is an increasing f... | 5 | [
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0.0129394531... | 37,925 | 37925 | |
Functions holomorphic on a region minus a Cantor set
up vote 9 down vote favorite
3
Let $X$ and $Y$ be simply connected open regions of $\mathbb{C}$, and let $Z \subset X$ be a Cantor set. Assume we have a homeomorphism $f$ from $X$ to $Y$, which is holomorphic on $X \setminus Z$.
Is $f$ necessarily holomorphic on $X$... | 5 | [
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-0... | 37,926 | 37926 | |
minimizing squares...
August 11th 2008, 04:07 PM #1
Newbie
Joined
Jul 2008
Posts
19
minimizing squares...
Given a triangle $\triangle ABC$ and a straight line $l$, find the point $P$ on $l$ such that $(PA)^2 + (PB)^2 + (PC)^2$ is the smallest.
Hello,
Let $A_h,\,B_h$ and $C_h$ be the orthogonal p... | 4 | [
0.044189453125,
0.07470703125,
-0.000843048095703125,
-0.06103515625,
-0.0186767578125,
0.10009765625,
-0.049072265625,
0.03564453125,
-0.00032806396484375,
0.01507568359375,
0.0245361328125,
0.0042724609375,
-0.019287109375,
-0.013916015625,
-0.03759765625,
0.080078125,
-0.012634277... | 37,927 | 37927 | |
Please Help - Solving, Graphing, and Factoring
August 15th 2007, 02:09 PM #1
wonderwall09
Guest
Please Help - Solving, Graphing, and Factoring
I have 3 algebra problems that I have no idea how to work. It's the beginning of the school year and our teacher gave us a diagnostic worksheet to see what we know, but sh... | 4 | [
-0.029296875,
-0.01019287109375,
0.048095703125,
-0.0308837890625,
0.0272216796875,
-0.062255859375,
-0.060546875,
0.0027618408203125,
-0.06494140625,
0.041015625,
0.060546875,
0.05322265625,
0.07763671875,
0.0693359375,
0.050537109375,
0.0986328125,
0.02197265625,
-0.07666015625,
... | 37,928 | 37928 | |
How do you prove that [3,4)~[3,4)\{pi} ?
Can anyone provide a proof, plz? I need to understand how the proof works, 10x in advance...(Happy)
Let $a = \pi-3$ and let $A = \left\{3+\frac{a}{2^n}\;\middle\vert\; n\in\mathbb{N}\right\}$ where $\mathbb{N}=\{0,1,2,\dots\}$. In particular, $\pi\in A$. Then we can construct ... | 5 | [
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0.0390625,
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0.00927734375,
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-0.0302734375,
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-0.0537109375,
0.00151824951171875,
-0.07958984375,
-0.025146484375,
-0.0... | 37,929 | 37929 | |
Network Graphs
┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│This is an introduction to Network Graphs, with examples and exercises. The odd-numbered exercises are a... | 4 | [
0.00103759765625,
0.0031585693359375,
0.004058837890625,
0.0255126953125,
-0.02197265625,
0.0390625,
-0.039306640625,
0.0228271484375,
-0.048583984375,
0.039306640625,
0.05810546875,
0.01171875,
0.017822265625,
0.054443359375,
-0.0390625,
0.05615234375,
-0.054931640625,
0.005828857... | 37,930 | 37930 | |
Logarithmic Equivalent of the Inverse Hybolic Cosine Function
Date: 10/28/97 at 06:58:22
From: Stephen Gurnell
Subject: Logarithmic equivalent of the inverse hybolic cosine function
Dr. Math,
First, thank you very much for your recent help and swift replies.
I have recently attempted a question which I think I hav... | 5 | [
-0.020263671875,
0.03369140625,
0.022705078125,
-0.036865234375,
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0.0634765625,
0.0048828125,
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-0.09521484375,... | 37,931 | 37931 | |
Proof: Recursion Equality
February 17th 2009, 08:05 AM #1
Newbie
Joined
Feb 2009
Posts
3
Proof: Recursion Equality
Proofs, doncha love 'um?
Anyway, down to business.
Define the function Q(n), (n is a Positive Integer) by
Q(0)=2,
Q(1)=6,
Q(x)=6Q(x-1)-5Q(x-2)
Prove by Induction Q(n... | 4 | [
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0.047119140625,
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0.037353515625,
-0.04345703125,
0.0279541015625,
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0.083984375,
0.04150390625,
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0.0693359375,
-0.06591796875,
0.0256347... | 37,932 | 37932 | |
Can models of set theory contain extra ordinals?
up vote 7 down vote favorite
3
In the paper "Complete topoi representing models of set theory" by Blass and Scedrov, they consider a general notion of Boolean-valued model of set theory, and one of the conditions they impose is
that the model contain "no extra ordinals ... | 5 | [
0.013427734375,
-0.08056640625,
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0.038330078125,
0.01019287109375,
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0.0196533203125,
0.060302734375,
0.06640625,
-0.08740234375,
0.0303955078125,
-0.008... | 37,933 | 37933 | |
Finitely generated Galois groups
up vote 12 down vote favorite
6
It is well-known that for a given natural number $n$ there is only finite number of extensions of $\mathbb Q_p$ of degree $n$. This result appears in many introductory books on algebraic number
theory. However, these books do not mention that this follow... | 4 | [
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0.05078125,
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0.03173828125,
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-0.006744384765625,
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0.010009765625,
-0.08837890625,... | 37,934 | 37934 | |
inverse funtions
Determine if: f(x) = 1/ x-2 and g(x)= 2x +1/x are inverse functions by computing their composistions.
Hi, you get the inverse function if you change the variables. If $f:y=\frac{1}{x-2}$ then the inverse funtion of f is $f^{-1}:x=\frac{1}{y-2}$ $(y-2)\cdot x=1$ $y-2=\frac{1}{x}$ $y=\frac{1}{x}+2$ $y=
... | 4 | [
-0.04736328125,
-0.061767578125,
0.0703125,
0.01300048828125,
0.0126953125,
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0.043212890625,
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0.07373046875,
0.01202392578125,
-0.09716796875,
-0.0220947265625,
-0.04443359375,
-0.0654296875,
0.04248046875,
-0.0054931640625,
-0.02600... | 37,935 | 37935 | |
Piecewise function of a pyramid surface
up vote -1 down vote favorite
Can't find it anywhere but I'm looking for a function dependent on x and y that describe any point on the surface of a square pyramid.
For example:
f(x,y) = 1 if 0 < x < 1-y < 1
0 else
Gives me the following surface, the first pictur... | 4 | [
0.001556396484375,
-0.0244140625,
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0.0228271484375,
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0.010009765625,
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0.08740234375,
0.0028533935546875,
0.05029296875,
-0.02490234375,
-0... | 37,936 | 37936 | |
Some partial derivatives
July 28th 2009, 12:46 AM #1
Junior Member
Joined
May 2009
Posts
39
Some partial derivatives
I've been asked to find the partial derivative with respect to x for the function:
$<br /> f(x,y) = 2xe^{x+y^2} - e^y + sinh(2x + y)<br />$
I've learnt about treating y as though... | 4 | [
0.042724609375,
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0.058349609375,
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0.053466796875,
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0.01031494140625,
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0.0986328125,
-0.00408935546875,
-0.051513671875,
-... | 37,937 | 37937 | |
Archimedes Spiral
August 10th 2010, 01:19 PM #1
Member
Joined
May 2010
From
WI - USA
Posts
129
Archimedes Spiral
Good afternoon,
I am working on finding the length of Archimedes Spiral $r=\theta$ for $0\leq\theta\leq2\pi$. I think I may be doing something wrong. This is what I'm getting:
$r... | 5 | [
0.0301513671875,
-0.022705078125,
0.03759765625,
-0.06298828125,
-0.02685546875,
-0.068359375,
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0.09130859375,
0.01007080078125,
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0.056396484375,
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0.05419921875,
-0.0869140625,
0.01214599609375,
-0.055419921875,
-0.05712890625,
... | 37,938 | 37938 | |
Two Problems on Tangents
Date: 07/09/98 at 21:22:00
From: Kimberly Wah
Subject: 2 tangent segments from a point to a circle
There are two tangent segments from a point to a circle. Say that the
angle that the two tangents form is 80 degrees. How would a person go
about proving that the arc closest to the angle forme... | 4 | [
-0.05517578125,
0.09326171875,
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0.039306640625,
0.027587890625,
0.0152587890625,
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0.10693359375,
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0.055419921875,
0.06689453125,
0.034912109375,
-0.055908203125,
-0.06494140625,
0.01721... | 37,939 | 37939 | |
Algebra help please!
September 15th 2005, 09:30 PM #1
Newbie
Joined
Sep 2005
Posts
2
Algebra help please!
I've been having some problems with these, if someone could help that's be nice.
Perform the indicated operations and simplify.
x^2 - x - 6 x^2 - 3x - 4
x^2 + 4x + 3 * x^2 - 4x + 3
... | 4 | [
-0.020751953125,
0.0242919921875,
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0.032470703125,
0.054931640625,
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0.0189208984375,
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0.0634765625,
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0.033935546875,
0.07373046875,
-0.029296875,
0.0380859375,
-0.002899169921875,
0.0437... | 37,940 | 37940 | |
5 dice probability
April 18th 2007, 05:35 PM #1
Newbie
Joined
Apr 2007
Posts
2
5 dice probability
I need to know the fomula to find what the probability of rolling 5 dice one time each and getting a 5 of a kind, 4 of a kind, 3 of a kind, pair, and a straight. I believe the forumula for 5 of a
kind is... | 4 | [
-0.01361083984375,
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0.04052734375,
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0.017578125,
0.0458984375,
0.03564453125,
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-0.01373291015625,
0.00213623046875,
0.00653076171875,
-0.043212890625... | 37,941 | 37941 | |
Determining Cone's Original Dimensions from a Slice
Date: 05/18/99 at 11:33:33
From: Mike Branson
Subject: Truncated cones revisited
Dr. Math,
You have helped us tremendously with the truncated cone problem I
presented you several weeks ago. Thank you.
I have another question for you along the same lines... | 4 | [
0.046875,
0.0341796875,
0.0634765625,
0.00421142578125,
-0.053466796875,
-0.0634765625,
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0.0673828125,
-0.009033203125,
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0.0086669921875,
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0.06201171875,
-0.05810546875,
-0.0206298828125,
-0.07373046875,
0.061279296... | 37,942 | 37942 | |
Determin an equation from a rational fucntion graph
March 24th 2009, 06:25 AM
jepal
Determin an equation from a rational fucntion graph
Please Help!!
Basically the graph is showing:
vertical asymptote (V)on x=3
and horizontal asymptote(H) on x=2
and a point in the graph (1.5,0)
So this is ... | 4 | [
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0.0167236328125,
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-0.01104736328125,
0.06494140625,
0.00830078125,
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0.01495361328125,
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0.06884765625,
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0.03173828125,
0.0595703125,
0.025146484375,
0.07568359375,
-0.0040588... | 37,943 | 37943 | |
Gaussian processes, sample paths and associated Hilbert space.
up vote 8 down vote favorite
3
Given a Gaussian process on some topological space $T$, with a continuous covariance kernel $C(\cdot,\cdot)\colon T\times T\to R$, we can associate a Hilbert space, which is the reproducing kernel
Hilbert space of real-valued... | 4 | [
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0.00494384765625,
-0.031494140625,
0.013671875,
0.049072265625,
0.0016937255859375,
-0.01483154296875,
-0.0244140625,
-0.039794921875,
0.044189453125,
0.0... | 37,944 | 37944 | |
Chapter 4 Newton's Laws
Chapter 4: Newton's Laws
Forces
We are now concerned with the causes of motion (dynamics)
Force ( F or F ): an action exerted on an object which may
change its state of rest or motion.
Examples:
o Push
o P... | 4 | [
0.0267333984375,
-0.06982421875,
0.05419921875,
0.044677734375,
0.05517578125,
0.08837890625,
-0.06982421875,
0.0059814453125,
0.036865234375,
0.12451171875,
-0.042724609375,
-0.041259765625,
-0.0810546875,
0.00537109375,
-0.020751953125,
-0.0302734375,
-0.0198974609375,
0.02062988... | 37,945 | 37945 | |
Posers and Puzzles : 12 Marbles
Original post by
Hegemon
, 21 May '05 23:12
1.
A Lost Bobby
London
Joined : 21 Sep '04
Moves : 18171
2.
Originally posted by Hegemon
There are 12 marbles al... | 4 | [
0.011474609375,
-0.00482177734375,
-0.0011444091796875,
-0.06494140625,
-0.0712890625,
-0.0166015625,
-0.007293701171875,
-0.053955078125,
-0.048095703125,
-0.01287841796875,
-0.02978515625,
-0.1044921875,
-0.004608154296875,
0.025634765625,
-0.06640625,
-0.09033203125,
0.0234375,
... | 37,946 | 37946 | |
Two-Variable Data Analysis Multiple Choice Practice Problems for AP Statistics
By
Duane C. Hinders
— McGraw-Hill Professional
Updated on Feb 5, 2011
Review the following concepts if necessary:
Problems
1. Given a set of ordered pairs (x, y) so that s[x] = 1.6, s[y] = 0.75, r = 0.55. What is the slope of the lea... | 4 | [
0.0211181640625,
-0.0194091796875,
0.018310546875,
0.043212890625,
0.068359375,
0.08642578125,
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0.0537109375,
0.0537109375,
0.06787109375,
-0.01141357421875,
0.0181884765625,
0.060302734375,
0.07373046875,
0.050048828125,
-0.05517578125,
0.00079345703125,
-0.078125,
... | 37,947 | 37947 | |
exact equationtype of differential equation that can be solved directly without the use of any of the special techniques in the subject. A first-order differential equation (of one variable) is
called exact, or an exact differential, if it is the result of a simple differentiation. The equation P(x, y)y′ + Q(x, y) = 0 ... | 5 | [
-0.12451171875,
-0.004150390625,
0.07080078125,
0.05419921875,
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0.0196533203125,
0.0240478515625,
0.03271484375,
0.0732421875,
0.006317138671875,
-0.0045166015625,
0.0751953125,
0.048095703125,
-0.02685546875,
-0.1025390625,
0.0402832031... | 37,948 | 37948 | |
Definition of a Tensor
Date: 05/20/2001 at 10:00:41
From: M Innes
Subject: Clear concise definition of a tensor
If a vector can be described as "any quantity having magnitude and
direction" why can't a tensor be defined as "any..." in just a
couple of lines?
Many thanks.
Date: 05/20/2001 at 17:32:42
From: Doctor ... | 4 | [
0.0177001953125,
-0.109375,
0.00341796875,
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0.033203125,
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-0.0074462890625,
-0.01324462890625,
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-0.0625,
0.087890625,
0.0218505859375,
-0.00146484375,
0.0021820068359375,
0.0136718... | 37,949 | 37949 | |
Solving a square equation?
March 15th 2011, 01:31 PM #1
Hi!
I´m doing maths at the moment and I´m having trouble solving the following question:
4 (x+7)^2 = 36
I started of by just taking the root of both
so it became:
2 ( x + 7) = 6
And now I don´t know what to do, I´m trying to solv... | 4 | [
0.0234375,
-0.0308837890625,
0.01300048828125,
0.087890625,
-0.0159912109375,
0.0732421875,
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0.03662109375,
0.02880859375,
-0.024169921875,
0.047119140625,
0.0303955078125,
-0.01513671875,
0.0225830078125,
0.0164794921875,
0.00469970703125,
-0.0137939453125,
0.06835937... | 37,950 | 37950 | |
(A)periodicity and (In)dependence on the boundary condition for optimization problem related to ODE
up vote 2 down vote favorite
The question is pair to MO117505 and translates some problem on error-correction codes to similar problem about differential operators. (See also If “force” is periodic does it imply “veloci... | 5 | [
-0.1015625,
-0.01422119140625,
0.0103759765625,
-0.021240234375,
0.03857421875,
0.022705078125,
-0.00311279296875,
0.00799560546875,
-0.022216796875,
-0.044921875,
0.004150390625,
-0.025390625,
0.08544921875,
-0.061279296875,
0.01806640625,
-0.011962890625,
0.052978515625,
0.043457... | 37,951 | 37951 | |
Finding values of b
November 29th 2010, 07:10 AM #1
Finding values of b
Not sure if this post should go here so if it would be better else where would a Mod please move this
Here is the question i am working on and it seems simple enough but i just wanted a second opinion
For what value(s) of b is $b^a$... | 5 | [
-0.028564453125,
-0.0322265625,
-0.0888671875,
0.0126953125,
-0.06982421875,
-0.0194091796875,
0.06591796875,
-0.01251220703125,
0.0390625,
0.0216064453125,
-0.06591796875,
-0.01287841796875,
0.10205078125,
0.059326171875,
0.1259765625,
0.1494140625,
-0.05419921875,
-0.03369140625,... | 37,952 | 37952 | |
tis question is so confusing.hu can solve?
xiaoz (a)The arc lamp to the shadow, and the man's head to the shadow form two similar triangles. The ratio of height to base for the man's triangle is $\frac{1.8}{2.5}$ The ratio of height to base
for the arc-lamp triangle is $\frac{x}{10+2.5}$ Because the triangles are simil... | 4 | [
0.018310546875,
0.09716796875,
0.0286865234375,
0.0002765655517578125,
-0.0004711151123046875,
-0.03857421875,
0.0191650390625,
0.06884765625,
-0.0284423828125,
0.0185546875,
0.08056640625,
-0.0712890625,
0.007659912109375,
0.03466796875,
0.0400390625,
0.054931640625,
-0.0439453125,
... | 37,953 | 37953 | |
Calculating Height in the Air
Date: 11/14/2001 at 17:16:31
From: Bobby Weidner
Subject: Math
I need to know the formula for calculating the height of an object,
like how high in the air the object is.
Date: 11/17/2001 at 22:52:30
From: Doctor Jeremiah
Subject: Re: Math
Hi Bobby,
I learned how to do this when I w... | 4 | [
0.00860595703125,
0.068359375,
0.005096435546875,
-0.06298828125,
-0.0322265625,
0.02197265625,
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0.11328125,
-0.01177978515625,
0.040771484375,
0.054443359375,
-0.00634765625,
-0.00147247314453125,
0.02294921875,
-0.01123046875,
0.059326171875,
0.004180908203125,
0... | 37,954 | 37954 | |
Negative Average Growth Rate
October 22nd 2012, 04:04 PM #1
Newbie
Joined
Oct 2012
From
PA
Posts
3
Need someone to check my math. I followed the formula for average growth rate in the post here. I have five years of data. The values for the first and last years are:
2007: 1,292
2011: 1,097
... | 4 | [
-0.0128173828125,
0.01123046875,
0.07470703125,
-0.010986328125,
-0.025634765625,
-0.061279296875,
-0.07861328125,
0.04443359375,
0.013427734375,
0.048583984375,
0.1318359375,
-0.06591796875,
0.02685546875,
0.0458984375,
-0.0341796875,
0.0849609375,
-0.10009765625,
-0.03271484375,
... | 37,955 | 37955 | |
Posts from October 2011 on Math Jokes 4 Mathy Folks
Archive for October, 2011
On Mischief Night, I spent a long time explaining our Halloween decorations to my neighbor. But I understood why he was confused. After all, they didn’t look like Halloween decorations.
There was the WITCH of Agnesi taped to our front door…... | 5 | [
-0.052490234375,
0.00946044921875,
0.05224609375,
0.0272216796875,
-0.0174560546875,
-0.04150390625,
0.029296875,
0.00469970703125,
-0.0162353515625,
0.014892578125,
-0.0184326171875,
-0.0322265625,
-0.03369140625,
0.09619140625,
-0.0242919921875,
0.05029296875,
-0.1142578125,
0.04... | 37,956 | 37956 | |
long trigo integral:
August 2nd 2007, 06:57 PM #1
Senior Member
Joined
Jul 2006
From
Shabu City
Posts
381
long trigo integral:
$\int {\csc^5{x}}dx$
Solutions:
$\int {\csc^3{x}}(1+\cot^2{x})dx$
$\int {\csc^3{x}}dx + \int {\cot^2{x}}{\csc^3{x}}dx$
solving for int of $\int {\csc^3{x}}... | 5 | [
-0.03369140625,
0.0211181640625,
0.0228271484375,
0.0185546875,
0.05126953125,
-0.00933837890625,
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0.0118408203125,
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0.01544189453125,
0.0203857421875,
0.04296875,
... | 37,957 | 37957 | |
How do you calculate a Riemann sum involving square roots?
January 30th 2010, 01:45 PM #1
Super Member
Joined
Nov 2008
Posts
597
How do you calculate a Riemann sum involving square roots?
I know how to calculate Riemann sums however whenever there is a square root involved with the sigma notation, I am c... | 5 | [
-0.0308837890625,
-0.0277099609375,
0.08544921875,
-0.008056640625,
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0.0155029296875,
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0.0162353515625,
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0.00101470947265625,
-0.046142578125,
0.0235595703125,
-0.03... | 37,958 | 37958 | |
Structured Finance Cash Flow Collateralized Debt Obligations
Advanced Financial Economics
Introduction
Econ 426
Discussion Outline
Course Mechanics
- Learning Objectives
- Course Outlin... | 5 | [
-0.031982421875,
-0.002105712890625,
-0.091796875,
-0.057373046875,
-0.033447265625,
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0.01068115234375,
0.064453125,
0.0069580078125,
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0.01177978515625,
-0.022705078125,
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0.015380859375,
-0.001983642578125,
-0.000... | 37,959 | 37959 | |
Factoring a 3-Variable Polynomial
Date: 08/13/99 at 06:01:33
From: Daniel Baumgartner
Subject: Factorization in complex field
Is it possible to factor the polynomial
k1*x^2 + k2*y^2 + k3*z^2 + k4*xy + k5*xz + k6*yz
into
(g1*x + g2*y + g3*z)(h1*x + h2*y + h3*z)
over the complex field for every choice of... | 5 | [
-0.038818359375,
0.0263671875,
-0.04638671875,
0.05810546875,
-0.001922607421875,
-0.0245361328125,
0.0137939453125,
-0.0947265625,
-0.09521484375,
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-0.02783203125,
0.00043487548828125,
0.0498046875,
0.046142578125,
-0.0086669921875,
0.1015625,
-0.08642578125,
0.125... | 37,960 | 37960 | |
Vectors and Planes
February 13th 2013, 02:29 AM #1
Junior Member
Joined
Nov 2012
From
United Kingdom
Posts
28
Thanks
1
Vectors and Planes
I apologize if this isnt in the right place, my actual subject is mechanics. I've know how to do some of this question but stuck on other parts.
Consider ... | 5 | [
-0.07568359375,
-0.003570556640625,
-0.030029296875,
-0.095703125,
0.034423828125,
0.043701171875,
0.0673828125,
0.02294921875,
-0.00408935546875,
0.042724609375,
0.002227783203125,
-0.035888671875,
-0.0031280517578125,
0.018798828125,
-0.10107421875,
-0.051025390625,
-0.038818359375... | 37,961 | 37961 | |
Hoping I'm getting the hang of this: ∫∫ x^2 + 3y^2
July 20th 2008, 03:50 PM #1
Junior Member
Joined
Jul 2008
Posts
51
Hoping I'm getting the hang of this: ∫∫ x^2 + 3y^2
z=x^2 +3y^2 ; x=0, y=1, y=x, z=0
I drew a diagram and figured out that y should be between 1 and x
From the diagram, it looks ... | 5 | [
0.044677734375,
0.022705078125,
-0.0306396484375,
-0.02685546875,
-0.030517578125,
-0.052001953125,
-0.046142578125,
0.06591796875,
0.0191650390625,
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0.0021820068359375,
0.0712890625,
0.06787109375,
0.050048828125,
-0.052001953125,
0.017822265625,
-0.0250244140625,
-... | 37,962 | 37962 | |
Complex Numbers
January 16th 2008, 09:35 PM
OzzMan
Complex Numbers
I need to find the rectangular form of i ^ (-3) + i ^ (-2)
i = imaginary number
The answer in my book says -1 + i but i do not know how they got it
January 16th 2008, 09:40 PM
mr fantastic
Quote:
$i^{-3} = \frac{1}{i^3} = \fr... | 4 | [
-0.115234375,
0.06982421875,
-0.000919342041015625,
0.12109375,
-0.0216064453125,
-0.1357421875,
0.041015625,
0.04736328125,
0.03271484375,
-0.034912109375,
0.037109375,
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0.01806640625,
0.060546875,
-0.030029296875,
0.0125732421875,
-0.042724609375,
-0.05029296875,
... | 37,963 | 37963 | |
Math Forum Discussions
Math Forum
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Discussions
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MathTools
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Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: Product, Filters and Quantales
Replies: 31 Last Po... | 5 | [
-0.07080078125,
0.0264892578125,
0.004302978515625,
0.000743865966796875,
0.0634765625,
0.072265625,
0.11181640625,
-0.046630859375,
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0.01092529296875,
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0.048583984375,
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-0.003265380859375,
0.0947265625,
-0.0512695312... | 37,964 | 37964 | |
Double Integration with polar co-ordinates
February 18th 2010, 09:37 AM #1
Newbie
Joined
Feb 2010
Posts
8
Double Integration with polar co-ordinates
Let D be the disk of radius 6 centered at the origin. Find the
double integral of the function f (x, y) = e^(x^2 +y^2) over D
When I do this i get ... | 4 | [
0.062255859375,
0.0003681182861328125,
-0.043701171875,
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0.02197265625,
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0.0128173828125,
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0.040283203125,
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0.05615234375,
0.076171875,
-0.07275390625,
-0.03759765625,
0.... | 37,965 | 37965 | |
Schrodinger's equation over a randomized grid
up vote 4 down vote favorite
1
I am interested in solutions to $$ \frac{d}{dt} \Psi = -iH \Psi $$ for $H$ hermitian and time independent. This boils down to evaluating $$ \Psi(t) = e^{-iHt}\Psi_0 $$ at points of interest $t_n$. I
want to quickly compute $\Psi(t)$ up to a l... | 4 | [
-0.16796875,
0.0120849609375,
0.004547119140625,
-0.0003528594970703125,
-0.0260009765625,
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0.034423828125,
-0.036376953125,
-0.004669189453125,
0.0185546875,
0.042724609375,
-0.02099609375,
-0.0712890625,
-0.056396484375,
0.02783203125,
-0.08837890625,
0.06396484375,
... | 37,966 | 37966 | |
quick differentiation question about sin^2(x)
June 24th 2010, 08:04 AM #1
Newbie
Joined
Jun 2010
Posts
10
quick differentiation question about sin^2(x)
Ignorant question here, but I was looking at this example i have, needing to take the derivative:
f'(x) = sin^2(x) + cos(x)
= 2sin(x)*d/dx(sin x... | 4 | [
-0.03662109375,
-0.036376953125,
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0.0859375,
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0.04150390625,
0.041748046875,
-0.045166015625,
-0.00077056884765625,
0.... | 37,967 | 37967 | |
Semicircle and isosceles problem
March 11th 2010, 12:44 PM
josephk
Semicircle and isosceles problem
A semicircle and an isosceles triangle have the same base and the same area. Find the two identical angles of the isosceles triangle.
March 11th 2010, 01:33 PM
TKHunny
What have you done? What do you know a... | 4 | [
-0.02880859375,
0.0712890625,
0.0059814453125,
0.04931640625,
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0.068359375,
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0.01336669921875,
0.04931640625,
-0.009521484375,
-0.055419921875,
0.007... | 37,968 | 37968 | |
Effective Nuclear Charge
Java Security Settings:
This web page employs Java, which requires specific security settings for correct operation.
If the applets on this page do not run correctly, consult the
Virtual Chemistry Experiments FAQ
or the
Physlet Physics web site
for establishing the correct security settin... | 5 | [
-0.04931640625,
0.07373046875,
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0.10791015625,
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0.035888671875,
0.04931640625,
0.002288818359375,
0.057373046875,
0.046630859375,
-0.029296875,
-0.05908203125,
0.021484375,
-0.03662109375,... | 37,969 | 37969 | |
Proving that limit of sequence does not exists
April 7th 2013, 02:29 PM #1
Newbie
Joined
Mar 2013
From
.
Posts
3
Proving that limit of sequence does not exists
Hello,
I have some probelm regarding my homework.
I proved that the sequence $(-5)^{n}$ doesn't have limit and now I need to prove ... | 5 | [
-0.0966796875,
-0.040771484375,
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0.0308837890625,
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0.058837890625,
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0.0654296875,
-0.06201171875,
-0.000553131103515625,
0.0119018554687... | 37,970 | 37970 | |
Inverting a power series? ... Cornish Fisher
up vote 0 down vote favorite
1
Hello
In the derivation of the cornish fisher expansion, the following equation is obtained: $$ \sum_{n=2}^{\infty} b_n H_{n-1}(x_\alpha) = \sum_{j=1}^{\infty}\frac{(x_\alpha - z_\alpha)^j}{j!}H_{j-1}(x_\
alpha), $$ where $H_n(x)$ are the Her... | 5 | [
-0.1767578125,
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0.005706787109375,
0.026123046875,
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0.0146484375,
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-0.0017852783203125,
-0.024658203125,
0.056640625,
0.0220947265625,
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-0.111328125,
-0.059814453125,
0.056640625,
-0.048828125,
0.0400390625,... | 37,971 | 37971 | |
Confidence in temperature
May 25th 2011, 04:18 AM #1
Newbie
Joined
May 2011
Posts
2
Using column temp, we can compute the sample mean
temp = 19:74, sample size = 150 and the sample standard deviation stemp = 6:035.
(a) Construct a 91% confidence interval for the population mean of
temp.
... | 4 | [
0.04541015625,
0.04248046875,
0.059326171875,
0.028564453125,
-0.006927490234375,
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0.1025390625,
0.015869140625,
0.02001953125,
0.0107421875,
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0.05712890625,
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0.061279296875,
-0.042724609375,
-0.0113525390625,
-0.0299072... | 37,972 | 37972 | |
finding x
December 14th 2010, 07:09 AM
tysonrss
finding x
2(3x + 4) = 4x + 16 find x
2y = 1/2(3y + 5) find y
d + 2 = 1/2(4d - 6) find d
4q - 2 = 2(3q - 6) find q
Can someone offer help?
December 14th 2010, 07:10 AM
e^(i*pi)
The Distributive law is used here. Can you expand the brac... | 4 | [
-0.0673828125,
0.126953125,
0.061279296875,
0.005889892578125,
-0.038330078125,
0.06787109375,
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0.0267333984375,
0.0106201171875,
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0.03369140625,
0.06591796875,
0.025634765625,
-0.0869140625,
0.0322265625,
... | 37,973 | 37973 | |
Homework Help
Posted by rachel on Saturday, March 3, 2012 at 8:31pm.
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N
latitude). The two cities lie on approximately the same lon... | 4 | [
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0.08544921875,
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0.00897216796875,
0.006805419921875,
0.0164794921875,
-0.095703125,
-0.0410156... | 37,974 | 37974 | |
limits and continuity
November 24th 2005, 12:39 AM
freya81
limits and continuity
1a)Do these functions have limits.If the limit exists, find it with justification, if not explain why not
i) f(x,y) =x²-y²/x²+y²
ii) f(x,y) =x³-y³/x²+y²
iii) f(x,y) =xy/|x|+|y|
iv) f(x,y) =1-√(1-x²)/x²+ xy+y²
v... | 5 | [
-0.060302734375,
-0.030517578125,
-0.1181640625,
-0.04052734375,
0.06640625,
0.03173828125,
-0.052734375,
-0.052001953125,
-0.04150390625,
-0.05517578125,
0.05712890625,
0.041748046875,
-0.072265625,
0.0279541015625,
0.056396484375,
0.027099609375,
0.0010223388671875,
-0.0947265625... | 37,975 | 37975 | |
Seating People in a Row
Date: 12/16/95 at 18:58:1
From: Anonymous
Subject: Permutation and Combination
Find the numbers of ways in which 4 boys and 4 girls can be seated in a
row of 8 seats if they sit alternately and if there is a boy named
John and a girl named Susan amongst this group who cannot be put in
adjacen... | 4 | [
0.018798828125,
0.059814453125,
0.0771484375,
-0.06787109375,
-0.0830078125,
0.059814453125,
-0.01416015625,
-0.0166015625,
-0.0242919921875,
0.049560546875,
-0.032958984375,
0.0135498046875,
0.058837890625,
-0.004791259765625,
-0.0205078125,
0.07080078125,
0.032470703125,
0.017333... | 37,976 | 37976 | |
expected value of positive discrete RV
April 25th 2009, 08:22 PM #1
Junior Member
Joined
Jun 2008
Posts
38
Thanks
1
expected value of positive discrete RV
I'm required to show that if $X\geq 0$ then $\sum_{n=1}^{\infty}\mathbb{P}(X\geq n) \leq \mathbb{E}[X] \leq 1 + \sum_{n=1}^{\infty}\mathbb{P}(X\ge... | 5 | [
-0.0167236328125,
0.047607421875,
0.08740234375,
-0.055908203125,
0.034912109375,
-0.0000591278076171875,
0.134765625,
0.033935546875,
0.0247802734375,
0.03857421875,
-0.06689453125,
0.033935546875,
0.05029296875,
-0.01116943359375,
0.0242919921875,
0.0546875,
0.0810546875,
0.02282... | 37,977 | 37977 | |
Limits Help
September 11th 2008, 03:49 PM
sleepiiee
Limits Help
1.) lim as x--> infinity (x - cube root of x)
2.) lim as x-->0+ ln(2x)
Anyone know how to solve these limit equations? Thanks.
September 11th 2008, 04:10 PM
mr fantastic
September 11th 2008, 04:18 PM
skeeter
$x - x^{\frac{1}{3}} =... | 5 | [
-0.02734375,
-0.0859375,
-0.018798828125,
-0.00152587890625,
0.01025390625,
-0.0220947265625,
0.0157470703125,
-0.019287109375,
0.0277099609375,
-0.00518798828125,
0.033203125,
-0.057861328125,
0.08203125,
0.03369140625,
0.045654296875,
0.04833984375,
-0.0751953125,
-0.0400390625,
... | 37,978 | 37978 | |
Math Forum Discussions
Math Forum
Ask Dr. Math
Discussions
Internet Newsletter
MathTools
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Search All of the Math Forum:
Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: Algebra 1 the vos Savant way
Replies: 0
Algebr... | 4 | [
-0.1044921875,
0.041015625,
-0.00909423828125,
-0.0126953125,
-0.04931640625,
0.005126953125,
0.0283203125,
0.0184326171875,
0.04296875,
0.023193359375,
0.0419921875,
0.09423828125,
0.014404296875,
0.0673828125,
-0.056396484375,
0.0177001953125,
-0.016845703125,
0.00885009765625,
... | 37,979 | 37979 | |
Newton's Method and Continued Fractions
Date: 10/06/1999 at 01:58:37
From: Robert Kaluhiokalani
Subject: Comment about sqrt() and Decimal to Fraction Conversion
Dear Math Doctors,
First, in the response given to 'Square Roots Without a Calculator'
http://mathforum.org/library/drmath/view/51890.html
I was intri... | 5 | [
-0.04931640625,
0.013916015625,
-0.015869140625,
0.040283203125,
-0.0181884765625,
-0.031494140625,
-0.15625,
0.05224609375,
-0.005645751953125,
0.10205078125,
0.050537109375,
0.0751953125,
0.02099609375,
0.06640625,
-0.08154296875,
-0.0084228515625,
-0.06640625,
0.01495361328125,
... | 37,980 | 37980 | |
linear transformation/linear combination question
April 28th 2013, 08:14 AM
flametag3
linear transformation/linear combination question
Let B = { $u_1, u_2, u_3$} and B' = { $v_1, v_2, v_3$}
Be the two bases for $R^3$
given that the transition matrix from B' to B is
P = $\begin{bmatrix}1 & -1 & 2\\0... | 5 | [
-0.03271484375,
-0.036865234375,
-0.11767578125,
-0.072265625,
0.049560546875,
-0.00836181640625,
0.03466796875,
-0.1015625,
-0.0234375,
-0.050048828125,
0.0013427734375,
-0.043212890625,
-0.046142578125,
-0.004150390625,
0.0106201171875,
0.0228271484375,
-0.08935546875,
0.03442382... | 37,981 | 37981 | |
integral of inverse hyperbolic
September 5th 2010, 09:37 PM
shadow85
integral of inverse hyperbolic
I have to find the integral of (x^2)(arccothx) dx
I have used integration by parts with
u = arccothx
du = 1/(1-x^2)
dv = x^2
v = 1/3*x^3
which i get:
(1/3)(x^3 * arccothx) - integral... | 5 | [
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0.004058837890625,
0.002044677734375,
-0.01507568359375,
0.0230712... | 37,982 | 37982 | |
si
PathScan - the Path-Scan significance test for mutations in groups of putative cancer genes
use PathScan;
my $pmobj = PathScan->new ($list_of_gene_lengths);
my $pval = $pmobj->path_scan ($actual_hits, $background_mutation_rate);
This package calculates the so-called path-scan statistic P-v... | 4 | [
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0.02770... | 37,983 | 37983 | |
Positive integer not divisible by 7
January 14th 2011, 06:02 AM
Hellbent
Positive integer not divisible by 7
Hi,
Is there a simple explanation for this?
The positive integer $n$ is not divisible by $7$. The remainder when $n^2$ is divided by 7 and the remainder when $n$ is divided by $7$ are each equa... | 4 | [
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-0.042724609375,
-0.02465820... | 37,984 | 37984 | |
quick question...
January 22nd 2011, 07:06 AM #1
Senior Member
Joined
Aug 2009
Posts
349
quick question...
well actually i have two quick questions. i am doing a problem and i wanted to make sure my thought process was correct.
1. when you have an integral, lets say inside the integral is 3*e^((1/2)... | 5 | [
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0.033447265625,
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0.0... | 37,985 | 37985 | |
combing terms in summation calculating beta hat zero
October 8th 2013, 05:52 PM
kingsolomonsgrave
combing terms in summation calculating beta hat zero
Attachment 29417
What happend here? when I manupulate it so that xbar squared is the sum of xi squared and the n goes in the denominator I still have sig... | 4 | [
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0.08935546875,
-0.0283203125,
0.007202... | 37,986 | 37986 | |
[SOLVED] Expressing in the form?
Hello, Mark! Quote: Express $\sqrt{44-24\sqrt{2}}$ in the form $a + b\sqrt{2}$ $\text{We have: }\;\sqrt{44-24\sqrt{2}} \;=\;a + b\sqrt{2}\;\;\text{ where }a\text{ and }b\text{ are rational numbers.}$
Square both sides: . $44 - 24\sqrt{2} \:=\:(a+b\sqrt{2})^2 \:=\:a^2 + 2ab\sqrt{2} + 2b^... | 4 | [
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-0.06494140625,
0.031982421875,
-0.02258... | 37,987 | 37987 | |
Does the Monoid Axiom hold for k-spaces?
up vote 7 down vote favorite
1
In “Algebras and Modules in Monoidal Model Categories” Schwede and Shipley introduced the monoid axiom. If a cofibrantly generated monoidal model category $M$ satisfies this axiom and some smallness
hypotheses, then the category $Mon(M)$ of monoid... | 5 | [
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... | 37,988 | 37988 | |
Math Forum Discussions
Re: problem on record-breaking values in probability
Posted: Mar 1, 2013 2:10 AM
On 02/27/2013 10:24 PM, David Bernier wrote:
> On 02/27/2013 04:05 PM, James Waldby wrote:
>> On Wed, 27 Feb 2013 07:10:08 -0500, David Bernier wrote:
>>> On 02/27/2013 05:49 AM, David Bernier wrote:
>>>> On 02/27/2... | 4 | [
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-0.06201171... | 37,989 | 37989 | |
first partial derivatives
February 17th 2009, 02:00 PM #1
Member
Joined
Nov 2005
Posts
172
first partial derivatives
Find the first partial derivatives of $f(x,y) = \frac{2x-4y}{2x+4y}$ at the point (x,y) = (2, 2).
\frac{\partial f}{\partial x}(2,2) =__
\frac{\partial f}{\partial y}(2,2)=__
... | 5 | [
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0.057373046875,
0.046630859375,
-0.04736328125,
-0.0639648437... | 37,990 | 37990 | |
Homework Help
Posted by Linda on Thursday, April 17, 2014 at 8:45pm.
How do I solve these inequalities:
e^3x>e^x-1
-6log (subscript of 4) x > -24
& how do I solve these:
8^x+1=3
e^x+2=50
8logx=16
I really don't understand how to solve these so can someone please explain them to me?
• Algebra 2 - Reiny, Thurs... | 4 | [
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-0.02136230468... | 37,991 | 37991 | |
Two very irritating area problems. (polar, and restricted area)
May 24th 2010, 06:43 AM
reaz
Two very irritating area problems. (polar, and restricted area)
hi guys
1. A curve is given in polar coordinates of r = cos ^ 2 fi , 0 <= fi <= 2 pi
How big area does the place/area have which is enclosed by the... | 4 | [
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-0.007293701171... | 37,992 | 37992 | |
Please tell me why?
December 5th 2006, 12:27 AM #1
Member
Joined
Nov 2006
Posts
123
If U= <-3,-2,2> and V=<-2,2,3> , then
Why U X V = <-10,5,-10> ? Would you please explain to me by showing its working steps? Thank you very much.
Note : U and V are vectors.
If $V_1 = (a_1,\ b_1,\ c_1)$ and ... | 5 | [
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Trying to work through a Fibonacci problem using Binet's Formula
August 5th 2012, 08:22 PM #1
Newbie
Joined
Aug 2012
From
Salem, Oregon
Posts
10
Trying to work through a Fibonacci problem using Binet's Formula
I am trying to show that the square of any Fibonacci Number differs by one from the product... | 4 | [
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Sum Equals Product
up vote 3 down vote favorite
Sum Equal Product
There are many articles in re this issue on the Web, although many are restricted to special cases (e.g., John Cook’s sum of tangents = product of tangents), and even some involving mixed numbers.
There is one excellent article in re: sum equal produc... | 5 | [
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0.0191650390625,
0.0849609... | 37,995 | 37995 | |
Please help!
January 2nd 2008, 10:12 AM #1
Junior Member
Joined
Oct 2007
Posts
30
x/4 + y/3 = 1 and (x^2)/16 + (y^2)/9 = 1 intersect at points A and B. Find the coordinates of a third point C on the graph of the second curve such that the area of triangle ABC is equal to 3.
Thank you very much for ... | 5 | [
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Analysis: Absolute Continuity & Differentiation
April 21st 2010, 11:09 AM
southprkfan1
Analysis: Absolute Continuity & Differentiation
Let A $\subset$[0, 1] be a Borel set such that 0 < m(A $\cap$ I) < m(I) for all interval I $\subset$ [0, 1]. Let
F(x) = m([0, x] $\cap$ A), where m is lebesgue measure. Show ... | 5 | [
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0.0791015625,
-0.0101... | 37,997 | 37997 | |
Parametrization of the curve
January 30th 2013, 11:05 PM
happymatthematics
Parametrization of the curve
Attachment 26774
please read the question above.
I don't know what I'm doing.
x^2+y+1-xy=2
x^2-1+y-xy=0
(x-1)(x+1)-y(x-1)=0
(x-1)(x+1-y)=0
.
.
oh...
can't find any clue ... | 4 | [
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-... | 37,998 | 37998 | |
Float Precision–From Zero to 100+ Digits
How much precision does a float have? It depends on the float, and it depends on what you mean by precision. Typical reasonable answers range from 6-9 decimal digits, but it turns out that you can
make a case for anything from zero to over one hundred digits.
In all cases in t... | 4 | [
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-... | 37,999 | 37999 |