content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Finite, Countable, or Uncountable?
September 27th 2011, 09:01 AM
SlipEternal
[SOLVED] Countable or Uncountable?
Let $f: \mathcal{P}(\mathbb{N}) \to \mathcal{P}(\mathbb{N})$ define the function $f(A)=\bigcup_{B\subset A, B\text{ is finite}, Be\emptyset}{\left\{\sum_{b\in B}{b}\right\}}$ (Forgive me for not
kn... | 5 | [
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... | 2,200 | 2200 | |
Dual space isometry
As far as I can say, yes.You have $\left|\int^1_0 g(t)h(t) dt\right| \le \int^1_0 |g(t)| |h(t)| dt \le \int^1_0 |g(t)| dt$ therefore $||\varphi_g|| \le \int^1_0 |g(t)| dt$. I think that $||\varphi_g|
| = \int^1_0 |g(t)| dt$ holds. A naive approach to show this would be trying to approximate the step... | 5 | [
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-... | 2,201 | 2201 | |
Rgdfg by Checkitout11
fdsgdsfgdsfgsdgdsgsdfEssay
1.(a) State experimental evidences for
i) strong repulsive force
ii) strong attractive force between atoms in a solid. (b) A simple model for the oxygen molecule consists of two equal masses connected by a light spring . The atoms oscillate along their lines of
centre wh... | 4 | [
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0.009... | 2,202 | 2202 | |
Indefinite integration with u-substitution
January 24th 2010, 07:05 AM #1
Member
Joined
Jun 2007
Posts
79
Indefinite integration with u-substitution
There are three problems where I had difficulty answering:
the first is (sqrt) ((x-1)/(x^5))
The first thing i did was distribute the x^5 and got:
... | 5 | [
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Idele Class Field Theory 1
Today we’ll start reformulating class field theory in the idelic setting. Let ${K}$ be a global field (a number field, or a finite separable extension of ${\mathbb{F}_q(t)}$). Let ${M_k}$ be all the
places and ${|\cdot |_v}$ the normalized absolute value at ${v\in M_k}$. Define ${K_v}$ be to ... | 4 | [
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... | 2,204 | 2204 | |
Math Help
Expand the function $f(x)=10-x$ on the interval <5,15>. How do i expand it when the interval isn't $<-l,l>$ ?
Last edited by topsquark; February 1st 2008 at 09:06 AM.
Could you not add ten to your function? then it would be the same as taking the integral from -5 to 5? I'm not sure about that but that seem... | 5 | [
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Figuring out limits of integration when doing joint densities
January 18th 2011, 01:37 PM #1
Junior Member
Joined
Jul 2008
Posts
51
Figuring out limits of integration when doing joint densities
The problem in question:
f(x,y)=24xy for 0<= x<=1, 0<=y<=1, 0<=x+y<=1, otherwise x=0
The goal is to s... | 4 | [
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Schmitt-trigger
Schmitt-trigger circuit tutorial
Noise reduction with hysteresis
Noise elimination is one of the main problems in achieving higher data rates and longer communication cables. There are several ways noise can be reduced. Communication lines can be shielded.
Differential communication like with RS422 a... | 4 | [
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Newtonian Mechanics - the movement of a particles
March 3rd 2010, 02:08 PM #1
Junior Member
Joined
Jan 2010
Posts
49
Newtonian Mechanics - the movement of a particles
A particle of mass m which moves along a horizontal straight line with a velocity of v encounters a resistance of av + b(v^3), where a and... | 5 | [
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nterface free energy
Interface free energy
From Scholarpedia
Charles Pfister (2010), Scholarpedia, 5(2):9218. doi:10.4249/scholarpedia.9218 revision #126977 [link to/cite this article]
Interface free energy is the contribution to the free energy of a system due to the presence of an interface separating two coexis... | 4 | [
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LP-Based approximation algorithms
by
Sudharshana
I have been reading the Approximations Algorithm book by Vazrani. It is interesting to note how Duality concepts in optimization play a crucial role in designing approximation algorithm techniques.
Chapter 12 in the book talks about such methods. Before we discuss the... | 5 | [
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SparkNotes: SAT Subject Test: Math Level 1: Lines and Angles
6.1 Lines and Angles 6.5 Key Formulas
6.2 Triangles 6.6 Review Questions
6.3 Polygons 6.7 Explanations
6.4 Circles
Lines and Angles
A line is a collection of points that extends without limit in a straight formation. A line can be named... | 4 | [
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Don't understand the question?
July 23rd 2009, 12:44 AM #1
Member
Joined
Sep 2008
Posts
114
Don't understand the question?
If [14x / root(2x+2)], what is one possible value of x?
14x / root(2x+2) is a term not an equation!
I don't know how to figure it out..
The answer to this was 1/2
... | 4 | [
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Frequency-domain acquisition of fourth-order correlation by spectral intensity interferometry
« journal navigation
Frequency-domain acquisition of fourth-order correlation by spectral intensity interferometry
Optics Express, Vol. 21, Issue 20, pp. 23206-23219 (2013)
http://dx.doi.org/10.1364/OE.21.023206
Abstract
... | 4 | [
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Problem Solving Select Many GRE Sample Questions
Problem Solving Select Many GRE Sample Questions 10
GRE Problem Solving Select Many Sample Questions
GRE Problem Solving Select Many Sample Questions 1 | GRE Problem Solving Select Many Sa... | 4 | [
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Inductive reasoning
June 8th 2009, 01:41 AM #1
Junior Member
Joined
Jan 2009
Posts
26
Inductive reasoning
Sort of lost on how to continue...
Prove that the following formula is true for all n using inductive reasoning 3 + 7 + 11 + .... +(4n - 1) = n(2n + 1)
n = 1 is true
assume k1 is true? (... | 4 | [
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Kendall's rank correlation
***
*
PAGE RETIRED: Click here for the new StatsDirect help system.
*
OR YOU WILL BE REDIRECTED IN 5 SECONDS
*
***
Kendall's rank correlation
Menu location: Analysis_Non-parametric_Kendall Rank Correlation.
Kendall's rank correlation provides a distribution free test of independence ... | 5 | [
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last thread for the night
June 8th 2006, 04:08 PM
Aarxn
last thread for the night
lastthread for the night, thanks if you can help me with these last problems
In the formula A=lw, If l is constant, A varies___________ as w
A large concrecte mixing machine can mix a certain ammount of concrete in 1... | 4 | [
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deriving angular central gaussian distribution from a multivariate normal distribution
up vote 1 down vote favorite
1
The angular central Gaussian (ACG) distribution on $(p-1)$-dimensional sphere $\mathbb{S}^{p-1}$ for a symmetric positive definite parameter matrix $\mathbf{A}$ is defined as
$$f(\mathbf{x},\mathbf{A}... | 4 | [
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Complex Numbers for Dummies
Today I decided to open a new chapter entitled "Mathematics". This new chapter will be mainly about Algebraic Coding Theory and Algebraic Geometry. If you are a mathematician, then this is not what
your are looking for because I will try to avoid all the unnecessary mathematical notations fo... | 5 | [
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Homework Help
Posted by Jaylin on Tuesday, February 5, 2008 at 10:14pm.
How do i solve these problems:
1. 2(-5y^3)^2+(-3y^3)^3
2. Lemon juice is 10^2 times as acidic as tomato juice. Tomato juice is 10^3 times as acidic as egg whites. How many times as acidic is lemon juice as egg whites? Write as a monomial.
3. Th... | 4 | [
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hyperbola or parabola?
December 6th 2009, 10:30 AM #1
Newbie
Joined
Oct 2009
Posts
20
Find the conic section represented by the equation: x=y^2+10
I think this is a parabola. But how do you tell if the equation is a hyperbola or not?
Put it in the standard form $Ax^2 + Bxy + Cy^2 + Dx + Ey + F =... | 4 | [
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Conic Problems help me pleas...
January 5th 2007, 09:44 PM
^_^Engineer_Adam^_^
Conic Problems help me pleas...
Circles
Write the Eqn:
The circle is tangent to the line $5x+12y = 26$ & the center is at the origin.
(I specifically dont knw where the circle is perpendicular to a part of this line)
... | 4 | [
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[SOLVED] linear/angular speed (another question)
February 21st 2009, 07:26 PM #1
Newbie
Joined
Jun 2008
Posts
17
[SOLVED] linear/angular speed (another question)
"suppose that a belt drives two wheels of radii R (bigger wheel) and r"
there is a figure and it's like a big wheel and a small wheel with... | 4 | [
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Solving Fractions
November 24th 2009, 05:44 PM #1
Solving Fractions
(1) $\frac{a+3}{3}+\frac{a-3}{6}=5$
(2) $\frac{3x+2}{2x-3}=\frac{3x-2}{2x-5}<br />$
(3) $\frac{4m}{m-2}-\frac{13}{3m-6}=\frac{1}{3}$
(4) $\frac{1}{t-5}+\frac{1}{t+5}=\frac{8}{t^2-25}$
(5) $\frac{3}{2b+4}-\frac{4}{b-2}=\frac{3}... | 4 | [
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-0... | 2,224 | 2224 | |
Solving differential equation from variational principle
March 26th 2013, 09:29 AM
JulieK
Solving differential equation from variational principle
I have the following differential equation which I obtained from Euler-Lagrange
variational principle
$\frac{\partial}{\partial x}\left(\frac{1}{\sqrt{y}}\fra... | 5 | [
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... | 2,225 | 2225 | |
Solutions to this equation - complex numbers
January 7th 2012, 01:33 AM #1
Junior Member
Joined
Nov 2011
From
Karachi
Posts
34
Solutions to this equation - complex numbers
1. $x^3-y^3=27$
The question says, what is the number of solutions to this equation in the field of complex numbers?
The... | 5 | [
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Total Differentiation; total mess.
May 13th 2010, 10:52 AM #1
Junior Member
Joined
Sep 2008
Posts
32
Total Differentiation; total mess.
Hello all,
A question about total differentiation is doing my head in. It is:
u = x^5 - 10x^3y^2 + 5xy^4 and y = 1 + x^2
It wants me to show that du/dx is... | 5 | [
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Continuity practice
Last edited by sfspitfire23; April 13th 2010 at 05:10 PM.
We know that $\left| {f(x) - f(y)} \right| \leqslant \left| {f(x) - f(c)} \right| + \left| {f(x) - f(c)} \right|$. Using continuity make each of the two on the right $< \frac{\varepsilon }{2}$.
Hm, so $\left| {f(x) - f(y)} \right| \leqslant... | 4 | [
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2 Probability question
November 7th 2009, 02:39 AM #1
Newbie
Joined
Nov 2009
Posts
9
2 Probability question
hello everyone
i am having problem with 2 question :
1) say i don't know the letters a-z and i need to create the word
" Probability" from the letters "P-r-o-b-a-b-i-l-i-t-y " . ( i h... | 5 | [
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damped vibration problem.
May 18th 2010, 08:25 PM
billbarber
damped vibration problem.
Assume that the gravitational acceleration is g = 10 m/sec^2. A mass of 2 kg stretches an elastic spring 10m. The mass is also attached to a viscous damper with a damping constant of 1 N sec/m.
Then the system is driven by... | 4 | [
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search results
Expand all Collapse all Results 201 - 220 of 220
201. CJM 1999 (vol 51 pp. 176)
Values of the Dedekind Eta Function at Quadratic Irrationalities
Let $d$ be the discriminant of an imaginary quadratic field. Let $a$, $b$, $c$ be integers such that $$ b^2 - 4ac = d, \quad a > 0, \quad \gcd (a,b,c)... | 4 | [
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-0.033203125... | 2,231 | 2231 | |
Homework Help
Posted by Sandy on Saturday, March 10, 2012 at 6:32pm.
Mr. Rogers wants to fence in a rectangular garden next to a straight section of the Scioto
River. He has 330 feet of fencing to do the entire job. He doesn’t need fencing along the
river, and there is a 4.5 foot wide clearance for a gate at one end... | 5 | [
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0.0191650... | 2,232 | 2232 | |
Central Limit Theorem
June 17th 2009, 07:56 PM #1
Junior Member
Joined
Jan 2008
Posts
35
Central Limit Theorem
Hi,
I have a problem regarding CLT:
"The lengths of mass produced nails are normally distributed with a mean of $3cm$ and variance of $0.01 cm^2$. 16 nails are randomly chosen and laid... | 4 | [
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Statistics: Power from Data! Range and quartiles
Range and quartiles
Archived Content
Information identified as archived is provided for reference, research or recordkeeping purposes. It is not subject to the Government of Canada Web Standards and has not been altered or updated since
it was archived. Please contact ... | 4 | [
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Homework Help
Posted by MV on Tuesday, December 6, 2011 at 10:31pm.
The function f(t)=100,000/1+5000e^(-t) represents the population of an endangered species bird t years after they were introduced to a non-threatening habitat.
a.In what year will there be 70,000 birds?
b.How many birds were intially introduced to t... | 4 | [
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solving this
February 28th 2010, 10:39 PM #1
Member
Joined
Jun 2009
Posts
108
solving this
its pre straight forward, ive got an idea on how to do it, but i keep getting the wrong answer.
$-6x^2+13x-5$
so far i got $(3x- ?)(2x+?)$
i know how to solve it, but im getting the wrong numbers in t... | 4 | [
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probability of dice throw
January 21st 2010, 07:59 AM #1
Newbie
Joined
Jan 2010
From
Irvine, CA
Posts
7
probability of dice throw
Question: A die has 6 sides numbered 1-6. If 3 dices are thrown, what is the probability that at least one of the dices shows the number six?
For this question, do I ... | 4 | [
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Homework Help
Posted by Angela on Sunday, July 24, 2011 at 9:12pm.
simplify the quotient: [(x+1)^3(4x-9)-(16x+9)(x+1)^2]/[(x-6)(x+1)^3]
• Pre Cal - Reiny, Sunday, July 24, 2011 at 10:00pm
= (x+1)^2[(x+1)(4x-9) - (16x+9)]/[(x-6)(x+1)^2]
expand the square bracket and factor the result...
= (x+1)^(4x+3)(x... | 4 | [
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GCD=1 Problem
February 5th 2007, 06:51 AM
tttcomrader
GCD=1 Problem
Let r,s,t be integers. If r=st+1, prove gcd(r,s) = 1.
My works so far:
I know that to prove gcd(r,s) =1, I need to have ra + sb = 1 for some integers a and b.
Now r = st + 1 means 1 = r - st.
Well, r = r(1) and - st means + s... | 4 | [
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Confused by integration!
December 7th 2007, 01:21 AM #1
Newbie
Joined
Dec 2007
Posts
3
How to integrate the equation below? thx i am confused and my brain is filled with murky glue!
(secx+tanx)dx (sorry the front symbol i dont know how to type in)
Since you have a sum, integrate each term separa... | 4 | [
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need help to prove inequalities
I don't know how good you are at inequalities but it basically goes like this: $\frac{a}{b} + \frac{b}{c} + \frac{c}{d} + \frac{d}{a} =$$\frac{a^2cd}{abcd} + \frac{b^2ad}{abcd} + \frac{c^2ab}{abcd} +
\frac{d^2bc}{abcd}$ $= \frac{a^2cd + b^2ad + c^2ab + d^2bc}{abcd} \leq \frac{a^2 + b^2 +... | 5 | [
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How to find roots of the equation system?
$x_1+2/{x_1}=2x_2$ $x_2+2/{x_2}=2x_3$ . . . $x_n+2/{x_n}=2x_1$ x is real number. How can I solve this equation system?
Hi Let $(u_n)_n$ the sequence defined by the value of $u_1$ and $u_{n+1} = \frac{u_n}{2} + \frac{1}{u_n} = f\left(u_n\right)$ where $f(x) = \frac{x}{2} + \fra... | 5 | [
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Parametric Vector Form
October 1st 2007, 05:34 PM #1
Member
Joined
Sep 2006
Posts
221
Parametric Vector Form
Quick question on trying to write the following matrix in parametric vector form:
A = [[1, -3, 0, -2, 4], [0, 0, 1, 5, -2], [0, 0, 0, 0, 0]]
(So it's a 3x5 matrix)...
So I started o... | 4 | [
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SparkNotes
Problem : Yesterday, the price of envelopes was $3 a box, and Julie was willing to buy 10 boxes. Today, the price has gone up to $3.75 a box, and Julie is now willing to buy 8 boxes. Is Julie's
demand for envelopes elastic or inelastic? What is Julie's elasticity of demand?
To find Julie's elasticity of dem... | 4 | [
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test statistic?
June 22nd 2009, 09:05 AM
jerryc
test statistic?
X and Y stand for the size of the male and femal of a specific species of moth. Assume the distributions of X and Y are $N(\mu_{X},\sigma^{2}_{X})$ and $N(\mu_{Y},\sigma^{2}_{Y})$. $\sigma^{2}_
{Y}>\sigma^{2}_{X}$. Use the modification of Z to t... | 5 | [
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Calculus 1 - implicit differentiation
Posted by Cupcake on Tuesday, April 1, 2008 at 1:26pm.
I do not understand implicit differentiation. One of the problems are: find y' by implicit differentiation xy+2x+3x^2=4.
I would appreciate any help that can be offered.
• Calculus 1 - implicit differentiation - drwls, Tue... | 4 | [
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last question
November 3rd 2007, 08:04 AM #1
Member
Joined
Nov 2006
Posts
139
last question
This should be the last.
A college basketball player who sinks 75% of his free throws comes to the line to shoot a "one and one" (if the first shot id successful he is allowed a second shot, but no second sho... | 4 | [
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equation of the line that is tangent to the curve
July 23rd 2011, 01:51 AM #1
Junior Member
Joined
Mar 2011
From
Toronto
Posts
52
equation of the line that is tangent to the curve
Find the equation of the line with a slope -1 that is the tangent to the curve:
$y= \frac {1}{x-1}$
This is the... | 4 | [
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equivalence class ?
First, do you know what an "equivalence relation" is? An equivalence relation is a relation, say "x is related to y" is some way that satisfies a) Any x is related to itself (reflexive property)
(that means, for example, that x> y is NOT an equivalence relation) b) If x is related to y, then y is re... | 4 | [
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Rotation Matrix
Axis Rotation Matrices
Axis Rotation vs. Vector Rotation
... | 4 | [
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kinetic energy PDE
February 2nd 2009, 03:38 PM
PvtBillPilgrim
kinetic energy PDE
How can I show that the kinetic energy for an incompressible, irrotational fluid with no sources or sinks is equal to
(delta/2)*(double integral of u*(du/dn))dS where delta is the density, u is the velocity potential, and S is a... | 4 | [
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-0.031127929... | 2,251 | 2251 | |
Equation of plane question.
December 11th 2010, 08:53 PM #1
Newbie
Joined
Oct 2008
Posts
24
Equation of plane question.
Its been a little while since I've done these ones and I'm having a little trouble wrapping my head around this one.
Question:
Find the equation of the plane perpendicular to t... | 4 | [
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countably infinite / uncountable sets
February 9th 2010, 10:54 AM #1
Junior Member
Joined
Dec 2007
Posts
25
countably infinite / uncountable sets
Is it true if the set X is countably infinite then there are bijective maps f: X-->N and f:N-->X ?
Separately, could someone start me off on this proof:
... | 5 | [
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matrix equation.
April 15th 2010, 10:35 PM
sigma1
matrix equation.
hello can someone please demonstrate how matrix is evaluated by expressing it in echelon form and use row reduction to solve it. it would be a great help.
k1+ L2+ Z = 20
3K -L+2Z = 22
2K+L-4Z=7
April 16th 2010, 03:09 AM
HallsofIvy
... | 4 | [
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0.03515625,
-0.087890625,
-0.027709960... | 2,254 | 2254 | |
Upper Bound
February 20th 2010, 12:50 PM
harish21
Upper Bound
S = {x | x in R , x>=0, x^2 < c}
a. Show that c+1 is an upper bound for S and therefore, by completeness axiom, S has a least upper bound that we denote by b.
b. Show that if b^2>c, we can show choose a suitably positive number r such that b... | 5 | [
-0.03515625,
0.0625,
0.0673828125,
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0.00008726119995117188,
0.09033203125,
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0.05712890625,
0.006103515625,
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0.08447265625,
0.012451171875,
-0.04736328125,
-0.04736328125,
0.031494140625,
-0.051513671875,
... | 2,255 | 2255 | |
Recurrence relation
April 18th 2009, 12:26 PM #1
Newbie
Joined
Apr 2009
Posts
5
Recurrence relation
Can you please help me to obtain the generating function of the recurrence relation
ar =ar-l + ar-z with ao = 0, al = 2, az = 3.
I think it looks like this
ar =ar-l + ar-z
with ao = 0, ... | 5 | [
-0.1279296875,
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0.00830078125,
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0.0400390625,
0.00927734375,
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0.06494140625,
-0.09326171875,
-0.131835... | 2,256 | 2256 | |
Directional Derivatives
March 13th 2010, 09:42 AM #1
Junior Member
Joined
Sep 2009
Posts
32
Directional Derivatives
Let f(x,y) - x^2y + xy^2. Find all vectors u such that Duf(1, -2) is exactly one-half the maximal possible directional derivative.
I assume you mean f(x,y)= $x^2y+ xy^2$
First fin... | 4 | [
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0.05712890625,
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-... | 2,257 | 2257 | |
Prove that the set of limit points is closed
February 12th 2009, 12:26 AM #1
Member
Joined
Feb 2009
Posts
103
Prove that the set of limit points is closed
I have a few questions - they all look very straightforward but I haven't actually got answers to them and it's greatly annoying me...
Let (X,T) ... | 4 | [
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0.0252685546875,
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0.05517578125,
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0.01409912109375,
0.0166015625,
0.0048828125,
-0.076171... | 2,258 | 2258 | |
finding the test statistic, p-value..
June 17th 2009, 07:20 PM #1
Newbie
Joined
Jun 2009
Posts
10
finding the test statistic, p-value..
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic, p-value, critical value(s), and state the final con... | 5 | [
0.035400390625,
0.0986328125,
0.028564453125,
-0.0206298828125,
0.00119781494140625,
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0.1357421875,
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0.09326171875,
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0.0546875,
-0.01397705078125,
0.00958251953125,
-0.047119140625,
-0.0025177001953125,
-0.06787... | 2,259 | 2259 | |
polar coordinate components and acceleration
February 20th 2013, 11:54 AM
carla1985
polar coordinate components and acceleration
I'm stuck on the second part of this question:
Suppose that a particle moves in a plane with trajectory given by thepolar equation r = 2b sinθ for some constant b > 0.
(i) Sh... | 4 | [
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0.0213623046875,
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0.080078125,
-0.074218... | 2,260 | 2260 | |
valid probability density function?
February 22nd 2008, 08:28 AM #1
valid probability density function?
1. For each of the following functions how do you determine whether it is a valid probabilty density function??????????????
(a) $f(x) = \frac{x}{2} , ~~~~~~~~ 0\leq x\leq 2$
(b) $f(x) = 4e^{-4x} , ~~~~... | 4 | [
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-... | 2,261 | 2261 | |
inequalities linear programming
April 19th 2008, 08:19 AM #1
Junior Member
Joined
Dec 2007
Posts
64
inequalities linear programming
Hello eveyone!
two machines:
type A costs £50 per day and needs one person to operate it,
type B costs £20 per day and needs 4 people to operate it
let x b... | 4 | [
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0.0791015625,
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0.0732421875,
0.041015625,
0.03564453125,
0.1103515625,
-0.010009765625,
-0.094... | 2,262 | 2262 | |
Posts from October 2011 on Hydrobates
The Perron-Frobenius theorem is a result in linear algebra which I have known about for a long time. On the other hand I never took the time to study a proof carefully and think about why the result
holds. I was now motivated to change this by my interest in chemical reaction netwo... | 4 | [
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0.00482177734375,
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0.048095703125,
-0.0157470703125,
-0.0888671875,
0.03955078125,
-0.109375,
-0.00... | 2,263 | 2263 | |
Severity Calculator
January 5, 2013
By Mayo
(This article was originally published at Error Statistics Philosophy » Statistics, and syndicated at StatsBlogs.)
SEV calculator (with comparisons to p-values, power, CIs)
In the illustration in the Jan. 2 post,
H[0]: μ < 0 vs H[1]: μ > 0
and the standard deviation SD... | 4 | [
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0.06787109375,
-0.011779... | 2,264 | 2264 | |
Brownian Motion
March 17th 2010, 11:00 AM #1
Brownian Motion
I don't understand this one small point about Brownian motion...
Here's the question, my answer and the part I always miss out...
Let $\{W_t\}_{t \geq 0}$ be a standard Brownian motion. Show that.
(a) $\{X_t\}_{t \geq0}$ is a standard Brow... | 5 | [
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0.019287109375,
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0.01544189453125,
0.08544921875,
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0.016845703125,
0.021484375,
0.04833984375,
-0.01275634765625,
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0.00921630859375,
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-0.0234375,
0.0205078125,
0.05419921875,
-0.105957031... | 2,265 | 2265 | |
Maximum/Minimum value of a quadratic expression
State the minimum or maximum value of y and the corresponding value of x for y=4(x^2) + 2 .
$4> 0\Rightarrow \displaystyle f:\mathbb{R} \mapsto \mathbb{R}, f(x)=4x^{2}+2$ has a minimum, it is obtained for $x=-\frac{0}{2\cdot4 }=0$, $y=\frac{-\Delta }{4\cdot4}=2$
| 4 | [
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0.0308837890625,
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0.08740234375,
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0.021728515625,
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0.06884765625,
0.01904296875,
0.06884765625,
0.083984375,
-0.035400... | 2,266 | 2266 | |
Homework Help
Posted by Anon on Sunday, March 16, 2014 at 6:14pm.
The average area of all squares with sides between a inches and b inches (b>a) is ____ in^2.
• AP Calculus - Steve, Sunday, March 16, 2014 at 11:46pm
∫[a,b] x^2 dx
= 1/3 x^3 [a,b]
= 1/3 (b^3 - a^3)
Consider only integer values. Then... | 5 | [
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0.06591796875,
-0.03125,
-0.01... | 2,267 | 2267 | |
Is the quantum algebra unique (up to isomorphism) in deformation quantization ?
up vote 8 down vote favorite
6
Consider a Poisson algebra A (i.e. commutative algebra with Poisson bracket).
Let $\hat A$ be a deformation quantization of the algebra A. We know that construction of deformation quantization and more gen... | 4 | [
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0.08447265625,
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0.0771484375,
-0.03613... | 2,268 | 2268 | |
Help with a congruence proof
October 11th 2012, 01:46 PM
notinsovietrussia
Help with a congruence proof
The question asks you to find if a statement is true, if it is, prove it. If it is not, give a counterexample.
If a^2 = b^2 (mod p), then a = b (mod p), where p is prime.
Note the underlined equal sign... | 4 | [
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0.01141357421875,
0.0505371093... | 2,269 | 2269 | |
Mathematical Induction to Prove Inequalities
November 28th 2009, 05:14 PM #1
Newbie
Joined
Nov 2009
Posts
14
Mathematical Induction to Prove Inequalities
I was wondering if anyone could help me out on this problem. Use mathematical induction to establish the following inequality.
(1+1/2)^n>=1+n/2, fo... | 4 | [
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0.0986328125,
0.0162353515625,
0.07275... | 2,270 | 2270 | |
Making a PB&J Using Rational Equations
Rational Expressions and Rational Equations can be tough for students of any age to grasp, let alone if they are nestled within a word problem. The goal of this exercise is to connect the students
with the material by engaging in a real-life problem...making peanut butter and jell... | 4 | [
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0.01092529296875,
0.025634765... | 2,271 | 2271 | |
Solutions for problems "B" in September, 2001
In this page only the sketch of the solutions are published; in some cases only the final results. To achieve the maximum score in the competition more detailed solutions needed.
B. 3472. How many time instants are there between 6 a.m. and 6 p.m. when it is not possible... | 5 | [
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-0.04248046875,
-0.0072021484375,
-... | 2,272 | 2272 | |
ball probability
February 21st 2010, 02:43 AM #1
Senior Member
Joined
Jan 2009
Posts
381
ball probability
Bag A contains 3 red balls and 2 green balls whereas bag B contains 2 red balls and 3 green balls . Two balls are withdrawn from bag A to be put into bag B . Then two balls are taken out from B
t... | 4 | [
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-0.0234375,
-0.07421875,
-... | 2,273 | 2273 | |
Calc3 multivariable cylindrical coordinates!
November 1st 2012, 09:36 PM #1
Newbie
Joined
Nov 2012
From
California
Posts
3
Calc3 multivariable cylindrical coordinates!
Integrate the function f(xyz)=−6x+5y over the solid given by the figure below, if P=(-6,-6,3), Q=(-3,-3,3), R=(3,3,3), and S=(6,6,3).... | 4 | [
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0.025146484375,
-0.0147705078125,
-0.1098632812... | 2,274 | 2274 | |
Show that f o g is one-to-one
January 24th 2010, 04:54 PM #1
Member
Joined
Oct 2009
From
Canada
Posts
128
Show that f o g is one-to-one
(a) Show that the composition of two one-to-one functions, f and g, is one-to-one
(b) Express $(f o g)^{-1}$in terms of $f^{-1} and g^{-1}$.
Dear 450081592... | 5 | [
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0.01422119140625,
-0.031982421875,
0.028198... | 2,275 | 2275 | |
Estimating ln(2) using integration
August 30th 2009, 09:14 AM #1
Estimating ln(2) using integration
Problem:
Estimate ln(2) using the Definition 6.9.1 (i'll show it later) and
a) left endpoint approximation with n=2
b) right endpoint approximation with n=2
Defintion 6.9.1:
$\int_(e^n)^1 1/t d... | 5 | [
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0.02099609375,
-0.0... | 2,276 | 2276 | |
Related Rates problem
October 19th 2008, 09:43 AM #1
Junior Member
Joined
Aug 2008
From
New York City
Posts
35
Related Rates problem
The ends of a water trough 8 feet long are equilateral triangle whose sides are 2 feet long. If water is being pumped into the trough at a rate of 5 ft^3/min, find the ... | 5 | [
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-0.00078582763671875,
-0.02734375,
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0.037109375,
0.016845703125,
0.07421875,
-0.00701904296875,
0.0295410... | 2,277 | 2277 | |
Matrix Question
The point of intersection of the lines $2x+3y=a$ and $x-2y=5$ is $(2,1)$. Use a matrix method to find $a$. Thanks
You need to apply row reduction methods to this matrix: $\left[\begin{array}{cc|c}2&3&a\\1&-2&5\end{array}\right]\xrightarrow{R_1\leftrightarrow R_2}{}\left[\begin{array}{cc|c}1&-2&5\\2&3&a... | 5 | [
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0.01361083984375,
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0.0311279296875,
-0.130859375,
-0.0... | 2,278 | 2278 | |
KVR Forum: Phase response of a biquad (Topic in the 'DSP and Plug-in Development' forum)
KVRer
6 posts since 25 Jan, 2013
Hello,
This is my first post here.
I found that site and forum thanks to a paper published by Robin Schmidt here:
http://www.rs-met.com/misc.html#DSPNotes
namely "Basic Digital Filters"... | 4 | [
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-0.007537841796875,
-0.03759765625,
0.0025634... | 2,279 | 2279 | |
Matrices/Determinant problem
April 16th 2007, 08:14 PM #1
Junior Member
Joined
Dec 2006
Posts
43
Matrices/Determinant problem
Okay, so I had to row reduce the matrix below to upper-triangular form in order to find the determinant.
[0, 0, 2, 0, 0]
[2, 0, 58, 96, -1]
[2, 1, 58, 96, -1]
[0,... | 4 | [
-0.01611328125,
0.016357421875,
-0.07666015625,
-0.0947265625,
0.0306396484375,
-0.036865234375,
-0.043212890625,
0.00384521484375,
-0.11962890625,
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0.057861328125,
0.02392578125,
-0.0322265625,
-0.0263671875,
-0.04248046875,
-0.03955078125,
-0.04931640625,
-0.04663085... | 2,280 | 2280 | |
Markov Chains - Recurrence
March 1st 2009, 06:52 AM #1
Junior Member
Joined
Mar 2009
Posts
64
Markov Chains - Recurrence
Hi, I was reading about Markov chains in wikipedia and I've got a doubt on this topic: Markov chain - Wikipedia, the free encyclopedia
More specifically, I wanted examples of tran... | 5 | [
-0.037841796875,
-0.0164794921875,
-0.05126953125,
-0.01904296875,
-0.0311279296875,
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0.02392578125,
-0.035888671875,
0.0947265625,
0.0013580322265625,
0.024658203125,
0.01239013671875,
0.07275390625,
0.00762939453125,
0.01953125,
0.0380859375,
-0.0286865234375,
-0.... | 2,281 | 2281 | |
Literal Equation help
October 27th 2010, 07:22 PM #1
Newbie
Joined
Aug 2010
Posts
16
Literal Equation help
Okay, so I have this equation:
$a_n=[d(n-b)]+a$
and I need to get to
$a_n=(a/b)+d(n-1)$
I've tried going about this a couple of times, but I always end up looping back to a previ... | 4 | [
-0.1533203125,
0.002685546875,
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0.0284423828125,
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0.0478515625,
0.032958984375,
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0.01538... | 2,282 | 2282 | |
Taylor series for function of several variables
Write down the Taylor series up to degree of five for:
$cos(x+y)$ about the point $(0,0)$
For doing questions like these. Should I just remember the formula for the Taylor expansion of $f$ about the point $x_0=(x_0,y_0)$
$\displaystyle f(x,y)=f(x_0)+\fr... | 5 | [
-0.021240234375,
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-0.0712890625,
-0.007110595703125,
-0.0037689208984375,
-0.024169921875,
-0.1103515625,... | 2,283 | 2283 | |
Divergence or Convergence of Series
January 26th 2011, 04:20 AM
4Math
Divergence or Convergence of Series
Hi,
I have have to determine if the following series is convergent or divergent.
$\displaystyle \sum_{k= 1}^{\infty} \frac{(k!)^{\frac{1}{k}}}{k}}= \sum_{k= 1}^{\infty} \root k \of {k!}{\frac{1}{k}... | 5 | [
-0.006622314453125,
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0.087890625,
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0.033935546875,
-0.03369140625,
0.09375,
0.0179443359375,
0.0021820068... | 2,284 | 2284 | |
Factoring over the Complex Numbers
Now you'll see mathematicians at work: making easy things harder to make them easier!
Consider the polynomial x-intercepts. (The graph is just the standard parabola shifted up by one unit!)
How can we tell that the polynomial is irreducible, when we perform square-completion or use ... | 5 | [
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0.00133514404296875,
0.016479492... | 2,285 | 2285 | |
Finding the General Statement
June 11th 2011, 08:21 AM #1
Newbie
Joined
Jun 2011
Posts
5
Finding the General Statement
Consider the five rows of numbers....
1 1
1 3/2 1
1 6/4 6/4 1
1 10/7 10/6 10/7 1
1 15/11 15/9 15/9 15/11 1
Let En(r) be the (r+1)th element in the nth row, star... | 4 | [
-0.0693359375,
0.06884765625,
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-0.00347900390625,
-0.03369140625,
0.047119140625,
-0.046630859375,
-0.09521484375,
-0.00836181640625,... | 2,286 | 2286 | |
RE: RE: RE: st: kronecker product - matsize
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
RE: RE: RE: st: kronecker product - matsize
From "Martin Halla" <Martin.Halla@jku.at>
To <statalist@hsphsun2.harvard.edu>
Subject RE: RE: RE: st: kronecker product - matsize
Date Tue, 01 ... | 4 | [
-0.05322265625,
0.038818359375,
-0.06689453125,
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0.0654296875,
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0.04736328125,
-0.06591796875,
0.0485839843... | 2,287 | 2287 | |
how do i graph a hyperbola from the following equation?
x^2-3y^2+8x-6y+4=0 how do i find the center,transverse axis, vertices, foci and asymptotes from that equation??
Move all the x terms together, the y terms together, and put the equation into the standard form by completing the square on the x terms and the y term... | 4 | [
0.0546875,
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0.02734375,
-0.047119140625,
0.10107421875,
-0.044921875,
-0.0986328125,
... | 2,288 | 2288 | |
Re: st: Comparing change in rates - frustrating problem: questionableres
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: Comparing change in rates - frustrating problem: questionableresults
From Joseph Coveney <jcoveney@bigplanet.com>
To Statalist <statalist@hsphsun2.harvar... | 5 | [
-0.0166015625,
0.039306640625,
0.013427734375,
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0.0654296875,
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-0... | 2,289 | 2289 | |
SparkNotes
Boyle's Law
The most important thing to remember about Boyle's Law is that it only holds when the temperature and amount of gas are constant. A state of constant temperature is often referred to as isothermal
conditions. When these two conditions are met, Boyle's law states that the volume V of a gas varies... | 4 | [
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-0.021728515625,
-... | 2,290 | 2290 | |
st: how many d.f. in the vcv for the within estimator?
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread... | 4 | [
-0.06884765625,
-0.0301513671875,
0.0264892578125,
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... | 2,291 | 2291 | |
exponential growth/decay word problem
June 6th 2008, 08:38 PM #1
Member
Joined
May 2008
Posts
76
exponential growth/decay word problem
When exposed to sunlight, the # of bacteria in a culture decreases exponentially at the rate of 10% per hour. What is the best approximation for the number of hours requi... | 4 | [
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-0.03857421875,
-0.00885009... | 2,292 | 2292 | |
Absolute Extrema in a region (Calc 3)
November 12th 2010, 06:35 AM #1
Junior Member
Joined
Sep 2009
Posts
47
Absolute Extrema in a region (Calc 3)
$<br /> <br /> f(x,y)=x^4 - 4x^2y^2 + y^4<br /> <br /> in the region (x,y): -1<=x<=1 -1<=y<=1<br />$
so far i found the critical points to be (0,0) and (... | 4 | [
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-0.062... | 2,293 | 2293 | |
Functional Programming with Python
By Pramode C.E.
Programs written in a functional programming language (like say Scheme) mirror the structure of mathematical expressions; math expressions are composed of strings of functions, each one computing a
value and producing absolutely no side effects. The same function, ca... | 5 | [
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-0.01123046875,
0.024047851... | 2,294 | 2294 | |
Keyframing
Tutorial on Computer Animation
Kerem Caliskan
Abstract
This tutorial heavily depends on “Computer Animation – Algorithms & Techniques” book by Rick Parent and the book slides. One can also find definitions from Oxford Dictionary, Wikipedia and many
chapter related data from different tutorials / presenta... | 4 | [
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-0.0296630859375,... | 2,295 | 2295 | |
Help needed with these two.
July 23rd 2008, 08:14 PM #1
Junior Member
Joined
Jul 2008
Posts
26
Help needed with these two.
A cube with edge length 2 metres is cut up into cubes each with edge lengths 5 centimetres. If all these cubes were stacked one on top of the other to form a tower, the height of the... | 4 | [
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0.0625,
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0.031005859375,
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0.06103515625,
-0.01171875,
0.03515... | 2,296 | 2296 | |
coin - prob distribution
May 22nd 2006, 06:50 PM #1
Newbie
Joined
May 2006
Posts
12
coin - prob distribution
I need help with the following question:
A coin is biased to show heads twice as often as it shows tails. You toss this coin 3 times and win 1 dollar each time it shows tails but lose 50 cent... | 5 | [
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The Planck scale: relativity meets quantum mechanics meets gravity.
The Planck scale: relativity meets quantum mechanics meets gravity.
According to Special Relativity's time dilation and length contraction, two observers with relative motion are condemned to eternal disagreement about times and lengths. Or are they?... | 4 | [
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reel analysis-help
December 17th 2008, 09:02 AM
sah_mat
reel analysis-help(added some more questions)
1-)if $E_1,E_2$ is measurable then show that
$m(E_1 \cup E_2)+m(E_1 \cap E_2)=mE_1+mE_2$
2-)if f(x) is nonnegatif and integrable function than show that
m{ ${x:x \in{R},f(x)=\infty}$}=0
December 18t... | 5 | [
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