content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
amortization
Data Structures
Lecture 2
Amortized Analysis
“amortized analysis finds the average running time per
operation over a worst-case sequence of operations.”
Haim Kaplan and Uri Zwick
February 2010
A ferry... | 5 | [
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-0.02282714843... | 41,800 | 41800 | |
Least absolute deviations
Talk0
34,135pages on
this wiki
Least absolute deviations (LAD), also known as Least Absolute Errors (LAE), Least Absolute Value (LAV), or the L[1] norm problem, is a mathematical optimization technique similar to the popular least
squares technique that attempts to find a function which clo... | 4 | [
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-0.00338745... | 41,801 | 41801 | |
rectangular and polar forms
June 12th 2012, 11:44 AM #1
Junior Member
Joined
Jun 2012
From
UK
Posts
37
rectangular and polar forms
z1 = 2 + j2
z2 = 1 + j5
z3 = j6
what is Y when :
Y = (1/z1) + (1/z2) + (1/z3)
1/z3 how is that done??????
Re: rectangular and polar forms
M... | 4 | [
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-0.1... | 41,802 | 41802 | |
Distance Between Points on the Earth
Date: 12/11/97 at 21:21:31
From: Cameron Hollingshead
Subject: Proofs for Non-Euclidian Geometry
The problem is to solve for the distance between two latitude/
longitude points with no parallels, say... 24N 70E and 65N and 30W.
The actual points are irrelevant as long as they do... | 5 | [
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Derivative Help, what happens to the 2 in the denominator
October 27th 2012, 11:44 AM #1
Newbie
Joined
Oct 2012
From
San Antonio
Posts
1
Derivative Help, what happens to the 2 in the denominator
f(x) = x^2 -1/2 * cos(x) <~the problem
solution:
Multiply -1 by cos to get -cos(x)
x^2 - co... | 5 | [
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Math Forum Discussions
Math Forum
Ask Dr. Math
Discussions
Internet Newsletter
MathTools
Teacher2Teacher
Teacher Exchange
Workshops
Search All of the Math Forum:
Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: The calculus is still about limits?
Replies: 0
... | 4 | [
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another log problem
February 16th 2011, 01:49 PM #1
Junior Member
Joined
Feb 2011
Posts
66
another log problem
Hi there, I have yet another log problem that's got me tearing my hair out. e^(2x)-e^(x+3)-e^(x+1)+e^4=0. I tried taking e^4 to the RHS and taking the ln of both sides and got 0=0...wtf.
I ... | 4 | [
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Complex Number - Finding the Modulus
November 8th 2010, 06:47 PM #1
Super Member
Joined
Dec 2008
Posts
509
Complex Number - Finding the Modulus
Hi
Can someone tell me what is wrong with my answer to the following question
Find the modulus: $j(1+jcos\theta+sin\theta)$
$=j+j^2cos\theta+jsin\... | 4 | [
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College Statistics
March 3rd 2014, 03:11 AM #1
Member
Joined
Nov 2013
From
Philadelphia
Posts
156
College Statistics
ACME manufacturing company has developed a fuel-efficient machine that
combines pressure washing with steam cleaning. It is advertised as
delivering 5 gallons of cleaner per mi... | 5 | [
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Tips for Simplifying Fractions
Date: 06/03/98 at 21:03:24
From: Cambree
Subject: I have no idea how to reduce or simplify a fraction
I have no idea how to reduce or simplify a fraction. Could you
please send me the solution to how to reduce or simplify a fraction
(like 2 and 4/5 or 4/5)? It would help a lot. Please ... | 4 | [
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What is the difference between holonomy and monodromy?
Take the 2-minute tour ×
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
And what is the simplest example in which one is trivial and the other is not?
manifolds geometry
monodromy.com i... | 4 | [
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Using Equations to Solve for molarity, volume of solution, and moles of a solute
February 28th 2011, 02:15 PM #1
Junior Member
Joined
Jul 2010
Posts
55
Using Equations to Solve for molarity, volume of solution, and moles of a solute
I am using the formulas for molarity: M = Mol/L, L = mol/M, & Mol = M x ... | 4 | [
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Particular Solution of Differential Equation
Date: 11/03/2007 at 16:58:25
From: charles
Subject: particular solution of ODE
Set up the appropriate form of a particular solution y_p but do
not determine the coefficients, of the ODE y" + 4y = 3x cos (2x).
Which side of the equation or both effect my answer?
Ax^2 cos ... | 5 | [
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Can a conditionally convergent series of vectors be rearranged to give any limit?
up vote 19 down vote favorite
5
Warmup (you've probably seen this before)
Suppose $\sum_{n\ge 1} a_n$ is a conditionally convergent series of real numbers, then by rearranging the terms, you can make "the same series" converge to any re... | 4 | [
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Math 12 logarithms
September 9th 2008, 04:39 PM #1
Newbie
Joined
Sep 2008
Posts
16
Math 12 logarithms
Hi all,
I just a few questions on Math 12, not sure how to do these questions (I need to know the how-to more than the answer itself):
1) "The population of a type of bacteria triples every 20 ... | 4 | [
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Graphing an Equation
Date: 4/4/96 at 22:10:44
From: Anonymous
Subject: Graphing
How do you graph 2x-y = 10? I just don't understand how to do it.
Would you please help? Thank you!
Date: 9/1/96 at 18:29:31
From: Doctor Jim
Subject: Re: Graphing
Since neither x or y has an exponent you can see, they are both called... | 4 | [
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Lesson 4 Properties of Matter
Properties of Matter
Anything in red type or on a red slide, you do not
need to put into your notes. Everything else, you are
expected to put into your notes.
Pre-Assessment Questions
What is matter?
Can you give an example... | 4 | [
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Prove a parametrization function is surjective
up vote 2 down vote favorite
2
As a starting note, I would like to say that I haven't (yet) taken courses in Set Theory, so some higher-level notation may be lost on me (and I may not write everything conventionally), but I'll do
my best.
My question is as follows: I hav... | 4 | [
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Three Elastics Equilibrium Point
December 29th 2011, 09:38 AM #1
Newbie
Joined
Dec 2011
Posts
5
Three fixed points in 3D space are each connected to a mobile fourth point with three elastic bands. The elastic bands are slack when shorter than their rest length, and they pull according to
Hooke's law (... | 5 | [
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Helping with long inverse equation
August 8th 2009, 05:58 PM #1
Member
Joined
Jul 2009
Posts
149
Helping with long inverse equation
Suppose i had this equation , which i do , well i have one similar.
I keep getting stuck on finding the inverse becuase of so many things in it , i am not sure about how... | 4 | [
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Help with graphs
October 20th 2007, 03:45 AM
Kblack
Help with graphs
Simplify the expressions:
Pls check attachment
2) a) Find the equation of a circle centered at the point (3,4) with radius 5.
b) Is the point (0,0) on the above circle ?
3) Find the domain of the functions
f(x)=sqrt16-x... | 4 | [
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Topological Compactness and Compactness of a Set
I need help in each of the problems. See attached picture. Thanks
9. Let $\{U_i\}_{i\in I}$ be an open cover of $F$ and let $U_k\in\{U_i\}_{i\in I}$ be the set that contains $x_0$. Since $x_0$ is a cluster point, $U_k$ also contains all but finitely many $x_n$.
Assume t... | 4 | [
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Cardano's Formula - please help
October 3rd 2006, 03:43 PM
sugar_babee
Cardano's Formula - please help
I've used Cardano's formula to determine an exact zero of
cube root 4 - cube root 2
The thing i need to do now is "check that it is indeed a zero of the function", I'm not sure how I'm supposed to do th... | 4 | [
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need help here
April 26th 2006, 04:58 AM
cheesepie
need help here
Q1) An oscillating signal voltage is given by E=125cos(wt-&)millivolts, where the angular frequency is w=123pi,phase angle is &=pi/2,and t= time in seconds. The triggering mechanism of an
oscilloscope starts the sweep when E= 60mV. what is the... | 5 | [
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Michigan
Doing Mathematics as a Vehicle
for Developing Secondary
Preservice Math Teachers’
Knowledge of Mathematics for
Teaching
Gail Burrill
Michigan State University
Burrill@msu.edu
How much
do all 3
chickens
weigh?
... | 4 | [
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March
Have you noticed the SAT Tips of the Week in the sidebar? These are intended both for math teachers and students.
The "new" SAT has a few 2nd year algebra questions and, typically, there is at least one 'parabola' problem usually expressed in function form. Here are two different versions - one multiple choice... | 4 | [
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-... | 41,825 | 41825 | |
Need help with multiple calc problems.
October 8th 2009, 08:32 PM #1
Newbie
Joined
Oct 2009
Posts
5
Need help with multiple calc problems.
sorry about the format earlier, i ctrl pasted it ; again,
1. Find derivative of the functions.
y = 6x^5/2 / x
y = 9x^2 - 5x / 4x
h(t) = (t^5 – 2)(... | 4 | [
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Another matrix problem
June 26th 2007, 03:30 PM #1
Junior Member
Joined
Mar 2007
Posts
32
Hi I'm stuck in this problem again.
Can somebody please help me? Thank you.
Using Gaussian elimination with back-substition or Gauss-Jordan Elimination solve the following problem.
A small corporation b... | 4 | [
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0.046142578125,
-0.0272216796875,
0.0028... | 41,827 | 41827 | |
Advanced Birthday Problem
March 19th 2010, 06:03 PM
stevez
Advanced Birthday Problem
In a town of 42,077 people 12 people run for local office.
Of those 12 only 9 are elected.
What is the probability that 2 of the 9 elected have the same birthday?
I don't even know where to start and I think I... | 5 | [
0.01611328125,
0.0283203125,
0.07958984375,
-0.0400390625,
0.0137939453125,
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0.0286865234375,
-0.11865234375,
-0.0286865234375,
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-0.04345703125,
0.0245361328125,
0.0159912109375,
-0.0703125,
-0.00482... | 41,828 | 41828 | |
Are (Frobenius) integrability conditions covariant?
up vote 3 down vote favorite
1
Starting with a system of partial differential equations for functions on $\mathbb{R}^n$, Frobenius' theorem gives a bunch of integrability conditions (on e.g. functions which are 'data' for the
system of PDEs, e.g. sourcing terms). Now... | 4 | [
-0.01434326171875,
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0.03125,
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... | 41,829 | 41829 | |
Math Help
October 13th 2007, 08:02 PM #1
Volume
New Age special Effects Inc prepares computer software based on specifications prepared by film directors. To simulate an approaching vehicle they begin with a computer image of a 5-cm by 7-cm by
3-cm box. The program increases each dimension at a rate of 2cm/s... | 5 | [
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0.05908203125,
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0.0810546875,
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0.07177734375,
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... | 41,830 | 41830 | |
How do I get(prove/solve) these limits? "lim x->+infinity (x)^(2/ln(1+x^3))" ...?
November 17th 2010, 06:09 PM #1
Newbie
Joined
Oct 2010
Posts
3
Hello, i've got some questions i really don't know how to prove/solve, and thats limits of infinity involving fraction as exponents.(lim x->+infinity (x)^(2/ln(1... | 5 | [
-0.0341796875,
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0.007720947265625,
-0.03955078125,
-0.04882... | 41,831 | 41831 | |
Simultaneous Equations | Three Unknowns
Solving simultaneous equations can be done with many methods. If you understand the underlying concept of elimination, the process will be simple and fun to use.
In this post, the Elimination method to solve 3 unknowns is presented. In a previous post of this website, the steps ... | 4 | [
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0.059326171875,
-0.007110595703125,
-0.1806640625,
0.01794433... | 41,832 | 41832 | |
Rotating a Plane about a Point in Space
Date: 07/03/2004 at 23:26:12
From: Tdon
Subject: plane rotation about a point in space
What is the equation to rotate a random plane in space around a known
point? The plane is defined by three points on a right-triangle.
After rotation the first point is to be at the origin o... | 5 | [
-0.08056640625,
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-0.078125,
-0.04... | 41,833 | 41833 | |
[SOLVED] Help please, AIME question: sequences and recurrence relations
February 9th 2009, 08:11 PM
amma0913
[SOLVED] Help please, AIME question: sequences and recurrence relations
For any sequence of numbers A = (a1, a2, a3, …), define ΔA to be the sequence (a2- a1, a3 – a2, a4 – a3,…) whose nth term is an+1 –... | 5 | [
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0.004302978515625,
-0.01953125,
-0.046142578125,
-0.06... | 41,834 | 41834 | |
evaluating the integral
October 19th 2009, 04:01 PM
masterofcheese
evaluating the integral
Evaluate the integral using u substitution.
Integral of (cos(x))^25 sin(x) dx; use u = cos(x)
I obtained (cos(x))^26/26. However, there is a negative in the solution and I am unsure of how there is a negative.
... | 5 | [
-0.0299072265625,
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0.0076904296875,
-0.009... | 41,835 | 41835 | |
Math Forum Discussions
Re: Two Finite Arithmetics
Posted: Apr 8, 2014 11:03 PM
On Tue, 8 Apr 2014, Dan Christensen wrote:
> Here, I have translated your axioms into DC Proof format. Download my software, enter these axioms (the "@" is mapped to epsilon) and see what you can do with them. You have to construct your ow... | 4 | [
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0.07177734375,
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0.03564453125,
-0.03588... | 41,836 | 41836 | |
Prime Triplet
Date: 12/07/2001 at 16:44:38
From: Lynn
Subject: Prime triplets
The consecutive odd numbers 3,5,7 are all primes. Are there infinitely
many such 'prime triplets'? That is, are there infinitely many prime
numbers p so that p+2 and p+4 are also primes?
My guess is that there is only one occurrence of su... | 4 | [
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-0.0390625,
0.0299072... | 41,837 | 41837 | |
Picard group, Fundamental group, and deformation
up vote 7 down vote favorite
3
One of the most elementary theorems about Picard group is probably $\mathrm{Pic} (X \times \mathbb{A}^n) \cong \mathrm{Pic} X$ and $\mathrm{Pic} (X \times \mathbb{P}^n) \cong \mathrm{Pic} X \times \
mathbb{Z}$ (we probably need some restri... | 4 | [
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0.033203125,
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-0.1279296875,
0.007171630... | 41,838 | 41838 | |
elements in the weyl group
up vote 2 down vote favorite
Let W be the Weyl a group of a semisimple simply connected group over C.
Let I={1,...,r} the set of simple roots.
For $w\in W$, I denote by supp(w) the subset of I corresponding to the simple reflexions that appear in a reduced decomposition of w.
Let w an ele... | 5 | [
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-0.0269775390625,
0.03759765625,
-0.099... | 41,839 | 41839 | |
Trigonometric Proof (Very Challenging)
January 26th 2009, 03:23 PM #1
Newbie
Joined
Jan 2009
Posts
2
Trigonometric Proof (Very Challenging)
Prove that cot(A) + cot(B) + cot(C) = (a^2 +b^2 +c^2) / 4(Area of ABC), where ABC is a traingle and a, b, c are opposite sides relative to the angles.
actually ... | 5 | [
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0.048095703125,
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0.01708984375,
0.07275390625,
0.0512... | 41,840 | 41840 | |
Misspel
I’ve studied Elementary number theory,particularly Pell’s equation.
One problem I made last year puzzled me for a long time,
so I wanted to solve it on this occasion. The problem is…
For any natural number n,
show that there are countless natural numbers (a,b,c)
such that a^2+b^2=c^2 ∧ |a-b|=n.
[proof]
L... | 5 | [
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... | 41,841 | 41841 | |
Arduino - AVR GCC multiplication
Arduino – AVR GCC multiplication
March 18, 2009 by mekonik
While working on my Arduino magnet levitation (details here), I stumped upon some problems with the way the compiler, AVR GCC, handles multiplication. I had to implement optimized multibyte
multiplication routines because Ardu... | 4 | [
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0.0021209716796875,
-0.0206298828125,
0.0... | 41,842 | 41842 | |
Characterizing elementary embeddings of $L$ and $L_\alpha$ under 0#
up vote 6 down vote favorite
1
Suppose 0# exists.
It is clear that every order preserving map from the indiscernibles to the indiscernibles gives an elementary embedding from $L$ to $L$. Furthermore, following lemmas 18.7 and 18.8 of Jech, if $\
alph... | 5 | [
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0.01226806640625,
0.024780... | 41,843 | 41843 | |
Find the Area between the curves
November 22nd 2011, 09:20 PM #1
Newbie
Joined
Nov 2011
Posts
3
Find the Area between the curves
Hi, I have two calculus problems that I need help on but do not know how to solve. Any help would be appreciated!
Find the area enclosed by the curves:
(a). y = x^2 -... | 5 | [
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0.0242919921875,
... | 41,844 | 41844 | |
Math Forum Discussions
Math Forum
Ask Dr. Math
Discussions
Internet Newsletter
MathTools
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Teacher Exchange
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Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: [HM] Egyptian Algebra and the Method of False Posi... | 4 | [
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0.0498046875,
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-0.01531982421875,
0.0390625,
-0.005859375,
0.01708984375,
-0.021240234375,
-0.0035552978515625,
-0.0103759765625,
0.030517... | 41,845 | 41845 | |
system of linear equations with an unknown coefficient
September 22nd 2010, 05:16 AM
dan213
system of linear equations with an unknown coefficient
Determine all values of k for which the system
10 k -1 0
k 1 -1 0
2 1 -3 0
has nontrivial solution.
I have written the augmented matrix, with t... | 4 | [
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0.0201416015625,
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-0.034423828125,
-0.038818359375,
-0.039794921875,
... | 41,846 | 41846 | |
Parabola Ellipse and Hyperbola
How will u classify the following curves in terms of parabola, ellipse or hyperbola? i) $17x^2+12xy+8y^2-46x-28y+33=0$ ii) $x^2-5xy+y^2+8x-20y+15=0$
Hello, varunnayudu! How will u classify the following curves as parabola, ellipse or hyperbola? $1)\;\;17x^2+12xy+8y^2-46x-28y+33\:=\:0$ $2... | 4 | [
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0.0255126953125,
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0.080078125,
-0.0159912109375,
... | 41,847 | 41847 | |
probabilities of increasing events under different product measures.
up vote 5 down vote favorite
1
Let $(B_i)$ be a collection of i.i.d. random variables taking values 0 or 1.
Suppose $0 < x^- < x^+ < 1$. Consider two different "success probabilities" for the i.i.d. collection $B_i$: under measure $P^-$, each $B_i$ ... | 4 | [
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0.06787109375,
-0.031738281... | 41,848 | 41848 | |
Limit evaluation
November 28th 2010, 05:57 AM #1
Junior Member
Joined
Mar 2010
Posts
26
Limit evaluation
Hi forum members, I've attached 2 limits I'm struggling to evaluate. could you give me a lead on it ? thanks in advance.
For the first one, you can find the limit of each term and sum them.
S... | 5 | [
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0.095703125,
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0.02490234375,
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0.08203125,
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0.032958984375,
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0.1123046875,
-0.0361328125,
-0.0194091796875,
-0.043701171875,
0.005767822265... | 41,849 | 41849 | |
Math Forum Discussions
Math Forum
Ask Dr. Math
Discussions
Internet Newsletter
MathTools
Teacher2Teacher
Teacher Exchange
Workshops
Search All of the Math Forum:
Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.
Topic: Limit Problem
Replies: 3 Last Post: Jan 27, 2013 1... | 4 | [
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0.0301513671875,
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0.0169677734375,
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0.0189208984375,
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0.041748046875,
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0.05078125,
-0.02197265625,
0.038330078125,
0.0771484375,
-0.03857421875... | 41,850 | 41850 | |
Show that sqrt(x) is uniformly continuous on [0,infinity)
March 24th 2010, 05:48 PM
tn11631
Show that sqrt(x) is uniformly continuous on [0,infinity)
Yikes! I feel like were all having trouble with uniform continuity...
Use the definition of uniform continuity to show that $\sqrt{x}$ is uniformly continuous... | 5 | [
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0.00007200241088867188,
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0.003509521484375,
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-0.019287109375,
-0.017333984375,
-0.05224609375,
0.006072998046875,
0.0263671875,
0.03564453125,
0.08056640625,
0.04052734375,
0.04150390625,
-0.01025390625,
0.04931640625... | 41,851 | 41851 | |
min poly = char poly
May 24th 2010, 07:28 AM
Chandru1
min poly = char poly
Let A:V->V be Linear Transformation. dim V =n. Prove that if Characteristic polynomial of A = min. Polynomial A then, there is a v \in V such that,
$v+ Av+ \cdots A^{n-1}v$ spans V.
May 24th 2010, 08:44 AM
Defunkt
Quote:
... | 5 | [
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0.053955078125,
0.01287841796875,
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-0.0302734375,
-0.0869140625,
0.001373291015625,
-0.048583984375,
0.0005... | 41,852 | 41852 | |
Complexity of determining if two graphs have same cycle matroid?
up vote 5 down vote favorite
Consider the following question:
Input: Two graphs G1 and G2
Question: Is the cycle matroid M(G1) isomorphic to the cycle matroid M(G2)
What is the complexity of this question?
It is well known that the two cycle matroids... | 4 | [
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-0.02685546875,
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-0.0296630859375,
-0.006317138671875,
0.05029296875,
0.019775390625,
... | 41,853 | 41853 | |
Chapter 12
Chapter 13
Factorial Analysis of Variance
In Chapter 12 we focused on "one-way" analysis of variance which is the appropriate ana... | 5 | [
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0.052490234375,
0.04638671875,
0.0250244140625,
0.10205078125... | 41,854 | 41854 | |
Examples of Valuations
The archetypal example of an archimedean valuation is the absolute value on the complex numbers. It is essentially the only one:
Theorem 13.3.1
(Gelfand-Tornheim)
Any field with an archimedean valuation is isomorphic to a subfield of , the valuation being equivalent to that induced by the usua... | 5 | [
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-0.020751953125,
0.013671875,
0.0405... | 41,855 | 41855 | |
Derivative of a Constant help
February 22nd 2008, 08:37 PM
topher0805
Derivative of a Constant help
Given that f(3) = -5, f '(3) = -2, g(3) = -2, and g'(3) = 3.
Find h'(3) for:
(a) h(x) = 2f(x) - 5g(x)
(b) h(x) = f(x)g(x)
(c) h(x) = f(x)/g(x)
(d) h(x) = g(x)/(2 + f(x))
As far as I k... | 5 | [
-0.08203125,
-0.0252685546875,
0.0625,
-0.03125,
0.035888671875,
-0.0174560546875,
0.01422119140625,
-0.035400390625,
-0.0194091796875,
0.099609375,
0.115234375,
-0.09130859375,
-0.0155029296875,
-0.05859375,
-0.01007080078125,
0.02587890625,
-0.0216064453125,
0.0308837890625,
-0... | 41,856 | 41856 | |
Difference between a partial selector and a selector...
up vote 0 down vote favorite
In Kharazishvili's "Nonmeasurable Sets and Functions" there is the following theorem:
There exists a subset $X$ of $\mathbb{R}$ which is a Vitali set and a Bernstein set.
The proof is as follows:
Let $\alpha$ denote the fir... | 4 | [
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-0.02587890625,
0.0546875,
-0.043701171875,
0.09765625,
0.076171875,
0.09375,
0.028564453125,
0.0732421875,
-0.028076171875,
-0.024169921875,
-0.0281982421875,
0.0028839111328125,
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0.03173828125,
-0.026611328125,
0.047119140625,
-0.0888671875,
-0.0... | 41,857 | 41857 | |
Finding point of intersection algebraically
February 12th 2008, 10:44 AM #1
Junior Member
Joined
Sep 2007
Posts
43
Finding point of intersection algebraically
Another question for a test tomorrow that I don't understand... I know how to find the point of intersection for two lines on a graph easily but I... | 4 | [
-0.0634765625,
-0.043701171875,
0.023193359375,
-0.00982666015625,
0.047119140625,
-0.02294921875,
0.054931640625,
-0.0361328125,
-0.00140380859375,
0.03759765625,
0.0302734375,
-0.02197265625,
0.06103515625,
0.001068115234375,
-0.033447265625,
0.06689453125,
-0.115234375,
-0.05419... | 41,858 | 41858 | |
Word Problem involving conversion
July 13th 2006, 07:26 PM
pashah
Word Problem involving conversion
Hello
I was given the following problem and have come up with what i believ to be the correct answer. I would appreciate it if someone could proof read my answer for accuracy.
1 yard = 0.9144 meters
... | 4 | [
0.12060546875,
0.0245361328125,
-0.01422119140625,
0.01312255859375,
-0.01043701171875,
-0.05517578125,
-0.0322265625,
0.048583984375,
-0.054443359375,
0.018798828125,
0.0023345947265625,
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0.1044921875,
0.05029296875,
-0.00830078125,
0.0810546875,
-0.005950927734375,... | 41,859 | 41859 | |
Integration Trick
Date: 8/13/96 at 16:59:44
From: Anonymous
Subject: Integral of Csc (x)
f(x)=1/sin(x). What is the indefinite integral of f(x)?
I got:
F(x)=ln(abs(sin(x))/abs(cos(x)+1))+C
But I'm not sure if this is correct.
Date: 8/30/96 at 17:30:37
From: Doctor Jerry
Subject: Re: Integral of Csc (x)
I diffe... | 5 | [
-0.05615234375,
0.018310546875,
0.0361328125,
0.029052734375,
0.07080078125,
-0.0267333984375,
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0.0260009765625,
-0.009033203125,
0.039306640625,
0.060791015625,
-0.0771484375,
-0.00010013580322265625,
0.0142822265625,
-0.002288818359375,
-0.005157470703125,
0.00262451... | 41,860 | 41860 | |
Matrix Proof
November 1st 2008, 09:10 PM #1
Member
Joined
Sep 2008
Posts
94
Matrix Proof
I need to prove that these determinants are equals.
Note: these are determinants, not matrices, I just don't know how to set them up as determinants using the math code...
$\begin{bmatrix}a1+b1t&a2+b2t&a3+b3... | 4 | [
-0.0830078125,
-0.01043701171875,
-0.007354736328125,
-0.056884765625,
-0.0576171875,
-0.033935546875,
0.025634765625,
-0.06640625,
0.003662109375,
0.0284423828125,
0.006439208984375,
-0.02197265625,
0.004241943359375,
0.0137939453125,
-0.047119140625,
0.05859375,
0.051025390625,
-... | 41,861 | 41861 | |
algebra twists
August 18th 2010, 03:29 AM #1
algebra twists
i m not ans....
find the value for x where $(2.4)^x = (2.6)^{(x-1)}$ has
1. no solution
2. exactly one solution
3. at least two solution
4. infinite number of solution
Last edited by grgrsanjay; August 18th 2010 at 03:50 AM.
... | 4 | [
0.0038299560546875,
-0.0263671875,
0.004425048828125,
-0.007232666015625,
-0.0198974609375,
-0.060791015625,
0.048828125,
-0.0045166015625,
0.0125732421875,
0.007049560546875,
0.031005859375,
-0.03759765625,
0.04736328125,
0.0242919921875,
-0.01300048828125,
0.0654296875,
-0.12158203... | 41,862 | 41862 | |
Extremely hard minimization problem
October 4th 2008, 12:47 PM #1
Newbie
Joined
Sep 2008
Posts
13
Extremely hard minimization problem
This one is incredibly hard. I have absolutely no idea how to solve it.
"A closed cylindrical can is to have a volume of V cubic units. Show that the can of minimum s... | 5 | [
0.0279541015625,
0.10009765625,
-0.01446533203125,
-0.027099609375,
0.011474609375,
0.01373291015625,
-0.025390625,
0.1015625,
-0.05224609375,
-0.01336669921875,
-0.07763671875,
0.0062255859375,
0.07177734375,
0.10693359375,
-0.0130615234375,
-0.0281982421875,
0.0079345703125,
0.09... | 41,863 | 41863 | |
Parallel and Perpendicular Lines
Date: 01/14/99 at 20:51:19
From: Anonymous
Subject: Algebra: linear equations
How do you tell if the graphs of these equations are parallel,
perpendicular, or neither without graphing?
4y - 5 = 3x + 1 and 12 = -6x + 8y - 3
Date: 01/15/99 at 15:47:54
From: Doctor Teeple
Subject:... | 4 | [
-0.060302734375,
-0.0004520416259765625,
-0.01263427734375,
-0.1298828125,
-0.06689453125,
0.06982421875,
-0.099609375,
0.0035247802734375,
-0.005645751953125,
0.0272216796875,
0.053955078125,
-0.01507568359375,
0.0556640625,
0.04638671875,
-0.03076171875,
0.0810546875,
-0.109375,
... | 41,864 | 41864 | |
Chapter 4
In this chapter we examine two procedures for testing whether an observed difference in averages (means) is statistically significant. The first case looks at the difference between unemployment
rates for blacks and whites. In this example, we ask whether the observed differences are large enough and... | 5 | [
-0.05615234375,
0.048828125,
0.059814453125,
0.0947265625,
0.08935546875,
0.052978515625,
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0.004058837890625,
-0.032470703125,
0.00958251953125,
0.01043701171875,
0.04248046875,
0.00086212158203125,
-0.068359375,
-0.017578125,
-0.0272216796875,
0.029052734375,
0.0327... | 41,865 | 41865 | |
Square Inside a Square
Date: 01/30/2001 at 16:58:52
From: Jon Kohn
Subject: Geometry
Thank you folks for being here!
As a math coach, I couldn't figure out:
Imagine a square with eight compass points marked at each corner and
midpoints of the sides. Create a smaller square inside by drawing
these 4 lines: N-SW, NE... | 4 | [
0.035888671875,
0.11181640625,
0.08642578125,
0.007659912109375,
0.023193359375,
-0.0257568359375,
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0.0260009765625,
0.005889892578125,
-0.035400390625,
-0.0517578125,
0.05615234375,
0.02001953125,
0.062255859375,
-0.040283203125,
0.027587890625,
-0.0086669921875,
-0.... | 41,866 | 41866 | |
Are these right? (Determinants)
February 26th 2010, 10:21 AM
StonerPenguin
Are these right? (Determinants)
$\left|\begin{array}{ccc}a_1 & b_1 & c_1 \\ a_2 & b_2 & c_2 \\ a_3 & b_3 & c_3 \end{array}\right|$
Hello all! I'd like to check these as I'm not very confident that I got them right, and I'd really appr... | 5 | [
-0.056640625,
-0.08203125,
-0.0167236328125,
-0.06201171875,
0.0264892578125,
0.0177001953125,
0.01104736328125,
-0.080078125,
-0.0830078125,
-0.000293731689453125,
0.08203125,
-0.0869140625,
-0.01470947265625,
0.0286865234375,
-0.08740234375,
0.0791015625,
0.0174560546875,
-0.0446... | 41,867 | 41867 | |
Reducing Fractions with Large Numbers
Date: 03/18/2004 at 15:46:58
From: Sonya
Subject: What is the answer to this Fraction
If you reduced 32/48 to lowest term, what would the answer be? Those
are big numbers, which makes it hard for me.
Date: 03/18/2004 at 16:23:16
From: Doctor Peterson
Subject: Re: What is the ... | 4 | [
0.0179443359375,
0.0537109375,
0.01300048828125,
0.0419921875,
0.05517578125,
-0.0177001953125,
-0.125,
0.08642578125,
-0.03955078125,
0.0113525390625,
-0.0771484375,
0.0595703125,
-0.0283203125,
0.059326171875,
0.0037689208984375,
-0.006561279296875,
-0.02490234375,
0.07763671875,... | 41,868 | 41868 | |
finding integers
September 20th 2008, 10:53 AM #1
Junior Member
Joined
Aug 2008
From
England
Posts
40
(px + 2)2 = 9x2 +qx + 4
Where p and q are positive integers find the values of p and q
not quite sure how to go about this one
thanks for any help
expand the left hand side and com... | 4 | [
0.018798828125,
0.08447265625,
0.0888671875,
0.046875,
0.03173828125,
0.1767578125,
0.00653076171875,
0.01324462890625,
0.0159912109375,
-0.054931640625,
-0.0086669921875,
0.004364013671875,
0.026611328125,
0.0361328125,
-0.0576171875,
-0.05126953125,
0.00119781494140625,
0.0612792... | 41,869 | 41869 | |
Tips for Integrating Functions
Date: 05/27/98 at 23:10:32
From: Brian C.
Subject: Pointers/Tutorial on Integration
Hi!
I have been looking all over the Net for the past few weeks for a good
tutorial on finding anti-derivatives, and haven't had much luck. There
is an abundance of excellent sources on Derivative Calc... | 4 | [
-0.04345703125,
0.01409912109375,
0.0810546875,
0.0322265625,
0.03125,
0.018798828125,
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0.032958984375,
-0.10400390625,
0.046142578125,
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-0.032470703125,
-0.0098876953125,
-0.060546875,
-0.016845703125,
-0.01019287109375,
0.021484375... | 41,870 | 41870 | |
Differential Calculus midterm
Hey guys can you help me with the questions on this Math midterm?
What exactly do you need help with? This is one of your first posts, and you simply post the question and ask for help. It seems like you just want the answers. For example, the question: Find the
derivative of $f(x)=\frac{... | 5 | [
-0.07373046875,
-0.015625,
0.023681640625,
-0.10498046875,
-0.00994873046875,
0.0048828125,
0.03271484375,
0.04443359375,
-0.0223388671875,
0.0546875,
0.12890625,
-0.0179443359375,
0.015625,
0.0296630859375,
-0.015869140625,
0.1240234375,
-0.03955078125,
0.044189453125,
-0.089355... | 41,871 | 41871 | |
Elliptic Integrals
Date: 12/13/2000 at 15:39:05
From: Lisa
Subject: Elliptic integrals
I am trying to find out exactly what elliptic integrals are and how to
derive them. I've searched the Internet and the library but nothing
helps me understand what they are.
Date: 12/13/2000 at 16:35:09
From: Doctor Rob
Subject:... | 4 | [
-0.00286865234375,
0.006683349609375,
-0.011474609375,
0.031494140625,
-0.009033203125,
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0.00106048583984375,
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0.0233154296875,
0.000339508056640625,
0.0306396484375,
0.000560760498046875,
0.0177001953125,
-0.053466796875,
-0.005920410156... | 41,872 | 41872 | |
limit of complex variable
April 10th 2009, 12:20 PM #1
Newbie
Joined
Apr 2009
Posts
1
limit of complex variable
lim z->1
[z(conjugate z) + 2z - (conjugate z) -2 ]
---------------------------------------
z^2 - 1
answer given is z / 2
but i stuck at
2+(conjugate z)
----------... | 5 | [
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0.004150390625,
0.056884765625,
0.031982421875,
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0.06982421875,
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-0.06982421875,
0.043212890625,
-0.01318359375,
... | 41,873 | 41873 | |
Phase plane problem
June 9th 2010, 02:43 AM #1
Junior Member
Joined
Mar 2010
Posts
45
Hi there, for the following equation that is in the phase plane (x,y),
$d^{2}x/dt^{2}-4x+x^{3}=0$ <--- sorry, there was a typo originally, now correct
where $dx/dt=y$
I need to prove that the solutions of ... | 5 | [
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0.0068359375,
0.0849609375,
0.0225830078125,
-0... | 41,874 | 41874 | |
Filling 2D array complexity.
03-24-2013 #1
Registered User
Join Date
Sep 2011
Location
Athens , Greece
Posts
283
Filling 2D array complexity.
Hello to all
Assuming that we have :
Code:
int arr2d[rows][columns] ; // Not valid syntax of course ... let be arr2d rows * columns size
... | 5 | [
0.056640625,
-0.0048828125,
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0.0279541015625,
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0.03271484375,
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-0.0163574218... | 41,875 | 41875 | |
Analysis summary for S&P500 geometric random walk model
Statgraphics for Windows
Analysis summary report for S&P 500 series
Geometric random walk model with growth
Analysis Summary
Data variable: SP500
Number of observations = 270
Start index = 1/71
Sampling interval = 1.0 month(s)
Length of seasonality = 12
Foreca... | 4 | [
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-0.00408935546875,
-0.078125,
-0.0230712890625,
-0.08984375,
-0.055419921875... | 41,876 | 41876 | |
Finitely generated subgroups of a product of free groups
up vote 9 down vote favorite
1
Is it true that a finitely generated subgroup of a cartesian product of free groups has a finite cohomological dimension?
The same question about pro-$p$ groups:
Is it true that a finitely generated closed subgroup of a cartesian... | 5 | [
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-0.0869140625,
-0.0142211... | 41,877 | 41877 | |
On the self-adjoint part of a quasinilpotent operator
up vote 3 down vote favorite
Disclaimer: this is not research-level, but I've read some non research-level questions/answers on quasinilpotent operators here, some of them involving renowned users. So I thought I'd give it a
try. I've already asked two persons who ... | 5 | [
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0.06201171875,
-0.03564453125,
0.0390625,
-0.0... | 41,878 | 41878 | |
derivative of x/x-1-including h!!!
February 15th 2013, 05:04 AM
Boo
derivative of x/x-1-including h!!!
Hello!
Now, I have to count derivative from :
$(\frac{x}{x-1}$
it would of course not be a problem IF the result would not be:
$-\frac{1}{(x-1)(x-1+h)}$
So, obviously it is the whole proce... | 5 | [
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-0.0054931640625,
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0.0155029296875,
-0.047119140625,
-0.00680... | 41,879 | 41879 | |
Help on proving equal cardinalities
November 18th 2011, 04:30 AM #1
Junior Member
Joined
Mar 2010
Posts
25
Hello, I am trying to proof the following claim.
$\left| P(A \times B) \right| = \left| P(B)^A \right|$
Where $P$ is the power set and $P(B)^A := \left \{ \left f: ( f: A \to P(B) \right ) \... | 5 | [
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-0.08544921875,
-0.02587890625,
-0.... | 41,880 | 41880 | |
Antidervatives?
November 28th 2011, 06:58 AM #1
Newbie
Joined
Nov 2011
Posts
7
Antidervatives?
My lecturer give weekly assignments for our class and each assignment is individual, he also makes a sample sheet with similar questions that we may ask for assistance with tutors and the likes,
There's one... | 5 | [
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0.06494140625,
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-0.0181884765625,
-0.0625,
0.018798828125,
-0.059814453125,
0.... | 41,881 | 41881 | |
Graph Theory
April 30th 2006, 01:34 PM #1
Senior Member
Joined
Apr 2006
Posts
401
NOTE: the compositions (3) for instance and (1,6) are subscripts.
How many triangles (=K(3)) does K(1,6) [with a horizontal line above K(1,6)], the complement of K(1,6), have?
How many triangles does K(1,n) [again,... | 5 | [
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-0.0177001953125,
0.0235595703125,
0.07666015625,
0.0174560546875,
-... | 41,882 | 41882 | |
rime
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Here we address the following frequently asked question.
Is there a formula for producing a specific prime number? Let me give you an example. The formu... | 4 | [
-0.03857421875,
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problem with a differential algebraic equation system
June 25th 2010, 02:44 PM #1
Newbie
Joined
Jun 2010
Posts
4
problem with a differential algebraic equation system
Hello, i face problem trying to solve the following differential algebraic equation system:
d(x1)=f1(x1,t)
d(x2)=f2(x2,t)
d(... | 4 | [
-0.08154296875,
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Four Methods of Solving Classic Chicken and Egg Problems
Date: 02/24/2009 at 18:41:05
From: Mikayla
Subject: Solve the word problem.
If 6 cats can kill 6 rats in 6 minutes, how many cats will it take to
kill 100 rats in 50 minutes? I think the answer is 50 cats but I
really can't tell. I just don't understand how t... | 4 | [
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-0.0400... | 41,885 | 41885 | |
Help with this trig word problem!
July 26th 2010, 03:17 PM
orkdork
Help with this trig word problem!
Two wires stretch from the top T of a vertical pole to points B and C on the ground, where C is 10 m closer to the base of the pole, than is B. If wire BT makes an angle of 35 degrees with the
horizontal and ... | 4 | [
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0.0103759765625,... | 41,886 | 41886 | |
How to Graph in XYZ Plane
Top
Three planes exist in cartesian coordinate system which are X-Y plane, Y-Z plane and X-Z plane. To draw a graph of a plane, first of all trace all those planes which intersect each Coordinate Plane.
If we are tracing X-Y plane, then Set Z to zero. If we want to trace Y-Z plane, then set ... | 4 | [
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... | 41,887 | 41887 | |
Sequential Circuit Analysis
Introduction
In this lecture you will learn techniques for analyzing sequential circuits. Sequential circuit analysis is useful when
1. You need to determine the functionality of an existing sequential ... | 5 | [
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0.0303955078125,
-0.0277099609... | 41,888 | 41888 | |
2 monotone bounded questions
November 14th 2009, 09:33 AM
osudude
2 monotone bounded questions
1) let x_1 > 1 and x_(n+1) := (2-1) / x_n for n c X. Show that x_n is decreasing and bounded below by 2. find the limit.
2) let x_n := 1/(1^2) + 1/(2^2) + ... + 1/(n^2) for each n c N. Prove that x_n is increasing... | 5 | [
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Linear discriminant analysis
Talk0
34,135pages on
this wiki
Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
Statistics: ... | 4 | [
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-0.021362... | 41,890 | 41890 | |
Menger Sponge
April 23rd 2011, 06:57 AM #1
Newbie
Joined
Apr 2011
Posts
1
Menger Sponge
Hi,
I need to calculate the surface area of the Menger Sponge and found the following explanation online:
N = number of square faces in the sponge)
N[0] = 6
N[1] = 8N[0] + 4x6x1 (each face of origina... | 4 | [
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... | 41,891 | 41891 | |
The root of polynomial
April 24th 2013, 02:37 PM #1
The root of polynomial
I am really not doing well on this question
$z^5-i=0$ find all the roots of the polynomial I know there is going to be 5 roots and 2 of them should be -i and +i but i can't figure out the rest?
Re: The root of polynomial
Re: The roo... | 5 | [
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-0.08984375,
0.002807... | 41,892 | 41892 | |
Logistic Bifurcation
From Math Images
Logistic Bifurcation
This is a section of a bifurcation diagram. It shows the relationship between a population's potential for growth and its size over time.
Basic Description
Bifurcation diagrams are key to understanding how
dynamic systems
change as the parameters us... | 4 | [
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is this triginometry or algebra?
August 25th 2009, 06:17 AM #1
Newbie
Joined
Jul 2009
Posts
9
a rectangle has a length 2√x cm and width √x cm
the length of the diagonal of the triangle is √45 cm
i) find the area of the rectangle
ii) the area of the square is twice the area of the rectangle
... | 4 | [
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Fluid Mechanics Fluid Mechanics
Fluid Mechanics
EIT Review
School of Civil and
Monroe L. Weber-Shirk Environmental Engineering
Shear Stress
F ... | 5 | [
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Finding the cutting point of a normal to a curve!
October 21st 2008, 02:07 AM
struck
Finding the cutting point of a normal to a curve!
I have been trying to solve this by using simultaneous equations but have failed so far.
- Find the point where normal to (2,4) to y = x^2 cuts the curve again.
(1) Sin... | 4 | [
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-0.0629882... | 41,896 | 41896 | |
Pivot quantity-question
October 14th 2008, 08:16 AM #1
Newbie
Joined
Sep 2008
Posts
23
Pivot quantity-question
Hi! I'd be thankful if anyone could check my work to see if I've done this correct:
Let Y have a pdf:
$fy(y) = \frac{2(\theta -y)}{\theta ^2}, 0<y<\theta <br />$
Show that $Y/\the... | 5 | [
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Basic Differential Equations Tutorial
This is a brief tutorial showing how to use differential equations to do make predictions about the state of a simple dynamic analogue electronics circuit. I have ported this post over from my
discontinued Wordpress blog, as some readers may find the information useful.
Put simply... | 5 | [
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How to Attain Minimax Risk with Applications to Distribution-Free Nonparametric Estimation and Testing
Abstract:
We show how to a derive exact distribution-free nonparametric results for minimax risk when underlying random variables have known finite bounds and means are the only parameters of interest.
Transform the ... | 4 | [
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