content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Homework Help
Posted by jonh on Tuesday, February 19, 2013 at 2:10am.
A man pulls a rope over a simple pulley attached to the bow of a rowboat. The manβs hands are 8 feet above the water and the bow of the boat is 1 foot above the water. How fast must the man pull the
rope to tow the boat in at 3 feet per second when ... | 5 | [
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0.05615234... | 200 | 200 | |
Homework Help
Posted by Jake on Wednesday, February 8, 2012 at 8:42pm.
Determine the equation of the line described by the given information.
a) slope -2/3, passing through (0,6)
b) passing through points (2,7) and (6,11)
c) parallel to y=4x-6 passing through point (2,6)
β’ Calculus - chemath, Wednesday, February... | 4 | [
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... | 201 | 201 | |
Ekonomiya by Chellai28
Projectile motion is a form of motion where a particle (called a projectile) is thrown obliquely near the earth's surface, & it moves along a curved path under the action of gravity. The path
followed by a projectile motion is called its trajectory. Projectile motion only occurs when there is one... | 4 | [
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Interest Simple and Compound
Interest Simple and Compound Follow
... | 5 | [
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Re: st: problem with nlsur quaids
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 Index]
Re: st: prob... | 5 | [
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Upper bound of the third Hankel determinant for a class of analytic functions related with lemniscate of Bernoulli
Keywords:
starlike functions; subordination; lemniscate of Bernoulli; Toeplitz determinants; Hankel determinants
1 Introduction and preliminaries
Let A be the class of functions f of the form
which are... | 5 | [
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questions in physics help me
December 10th 2010, 06:31 AM #1
Senior Member
Joined
Oct 2009
Posts
290
questions in physics help me
Q 1 :
Two masses 5 kg and 10 kg are suspended from ends of a string (mass less inelastic )
passing over a smooth pulley . Calculate the acceleration of the masses
... | 4 | [
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0.002... | 206 | 206 | |
function
Please note that the recommended version of Scilab is 5.5.0. This page might be outdated.
See the recommended documentation of this function
Scilab help >> Optimization and Simulation > Neldermead > fminsearch
fminsearch
Computes the unconstrained minimimum of given function with the Nelder-Mead algorithm.... | 5 | [
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... | 207 | 207 | |
A particularly challenging integral
June 21st 2010, 09:08 PM #1
Newbie
Joined
Mar 2010
Posts
15
A particularly challenging integral
Hello, Actex recently posted a really good challenge problem on their facebook page, and I've been trying to figure it out thus far, which eventually turned into deriving th... | 5 | [
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Homework Help
Posted by Ngoc on Tuesday, January 11, 2011 at 8:16pm.
How do you find the distance from the center of an equilateral triangle, with the side length of L, to a point?
β’ Geometry - Reiny, Tuesday, January 11, 2011 at 8:24pm
The centre of an equilateral triangle is the centroid of the triangle.
... | 4 | [
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-0.093... | 209 | 209 | |
mechanics - polar coordinates
April 26th 2012, 07:57 AM #1
Junior Member
Joined
Apr 2012
From
england
Posts
38
mechanics - polar coordinates
A particle of mass m moves under the influence of a central force which attracts a particle with force of magnitude F(r) = m/(r^5). Assuming that the particle m... | 4 | [
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Homework Help
Posted by calyn on Monday, January 3, 2011 at 10:06pm.
given R(-6,19) and S (14,-6), what are the coordinates of the oints on the segment RS two-fifths of the distance from R to S
β’ math - Henry, Wednesday, January 5, 2011 at 4:10pm
(-6 , 19), P(X , Y), (14 , -6).
X - (-6)) = 2/5(14 - (-6)),... | 4 | [
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rhombus
January 7th 2010, 03:21 AM
thereddevils
rhombus
A parallelogram ABCD with its diagonals meeting at the point O is shown in the diagram . AB is extendedto P such that BP=AB . THe line that passes through D and is parallel to AC meets PC
produced at point R and angle CRD =90 .
(1) SHow that the tr... | 4 | [
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Homework Help
Posted by HLR on Thursday, April 23, 2009 at 5:38pm.
Given the oft-cited statistic that 66.7% of the American public is overweight or obese, you are interested in comparing college students BMI level to the general population.
Assuming that the general population has a BMI of (ΞΌ) = 27.5 using Ξ± level of... | 4 | [
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Homework Help
Posted by mike on Friday, March 18, 2011 at 8:56pm.
solve the initial value problem by seperation of variables du/dt=2t+sec2t/2u, u(0)=-5
β’ calculus ((())) - MathMate, Saturday, March 19, 2011 at 12:15am
The following equation is separable (please check this is the same as your question after add... | 4 | [
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Need urgent help on factorising!
June 7th 2007, 01:00 AM #1
Junior Member
Joined
Mar 2007
Posts
34
Need urgent help on factorising!
Just a few questions I am having trouble with here before my exam:
Factorize
(1) p^6-64
(2) 25e^2-30ef-16f^2
(3) 2a^2-2b^2+5a+2am-5b-2bm
Thanks for the ... | 4 | [
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Posts by
Total # Posts: 70,555
physics
A tank has a length of 0.18 m, a width of 0.78 m, and a height of 0.44 m. If it is filled with water, how many kilograms does it weigh?
Math
There are 6 white, 9 brown, and 1 pink towels. What is the probability of using a brown or pink towel first.
physics
2.Boxcar A, with a ... | 5 | [
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Homework Help
Posted by mathstudent on Tuesday, January 2, 2007 at 1:59am.
Factor: x^3 - 3/4x - 1/4
The answer is: (x - 1)(x + 1/2)^2
How do I learn to do that? I'd like to reread an appropriate chapter from an appropriate textbook and do practice problems.
It takes experience and practiced eye. Algebra books have ... | 5 | [
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Houston community college
Posted by Abraham on Monday, September 24, 2012 at 12:35pm.
A projectile is fired from ground level with an initial velocity of 50m/s and an initial angle of 30degree. Assuming g= 9.8 m/s*2, find:
(a) The projectile total time of flight.
(b) The maximum height attained
(c) The total horizo... | 4 | [
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In a finite group of odd order, no nontrivial element is conjugate to its inverse
If $G$ is a group of odd order, prove that for any nonidentity element $x \in G$, $x$ and $x^{-1}$ are not conjugate.
Suppose to the contrary that $axa^{-1} = x^{-1}$ for some $a \in G$. Note then that $ax = x^{-1}a$ and that $ax^{-1} =... | 5 | [
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Homework Help
Posted by Joey on Tuesday, August 9, 2011 at 10:31am.
A construction company wants to build a rectangular enclosure with an area of 1000 square feet by fencing in three sides and using its office building as the fourth side. Your objective as
supervising engineer is to design the enclosure so that it use... | 5 | [
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Understanding 2t , 1-t^2 etc
April 30th 2010, 09:09 AM #1
Member
Joined
Mar 2009
Posts
97
Understanding 2t , 1-t^2 etc
Hi
Can someone explain the following diagram I have drawn.
For example where the t and 2 came from and their use in identities as I cannot make the relationship between them in t... | 4 | [
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Super Tough Probability Question
Just do (a) directly with polar co-ordinates. That's how you prove the normal density integrates to one.
You can work this out from basics as suggested by MathEagle, but if you are allowed to assume some basic knowledge of the Normal distribution there is a shortcut, which I think is p... | 5 | [
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Word problem using hyperbola...
April 8th 2010, 05:46 PM
uselessjack
Word problem using hyperbola...
Here's a drawing of the provided figure:
http://imgur.com/wrzYH.png
( URL of the picture in case it doesn't display: http://imgur.com/wrzYH.png )
The axes x and y are measured in miles.
In th... | 4 | [
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In a certain bathtub, both the cold-water and the hot-water
Author Message
TAGS:
In a certain bathtub, both the cold-water and the hot-water [#permalink] 20 Feb 2012, 14:58
1
... | 4 | [
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Lagrange Multiplier issues
June 26th 2012, 05:59 PM
robman
Lagrange Multiplier issues
hey everyone, i'm currently stumped on a problem that seems impossible to solve.
the formula is ((x^2)/9)+((y^2)/4)=1, and it asks to find the maximum area of a rectangle within that limit (equation)
so far ive gotten:... | 5 | [
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Algebra Quadratic Equations
Posted by Marysvoice on Friday, February 15, 2008 at 7:31am.
What are the pros and cons of completing the square as a way to solve quadradic equations?
β’ Algebra Quadratic Equations - Guido, Friday, February 15, 2008 at 8:02am
Completing the square is not the easiest way to solve qu... | 4 | [
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Upwinding method for convection terms in 2nd order PDE
April 20th 2013, 08:47 PM #1
Newbie
Joined
Apr 2013
From
United States
Posts
1
Upwinding method for convection terms in 2nd order PDE
I'm not sure if this belongs here or in the advanced applied math section, but here goes.
I'm trying to sol... | 4 | [
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Homework Help
Posted by Naibe on Thursday, January 24, 2013 at 11:21pm.
You are planning to build a walkway that surrounds a rectangular garden that is 10ft by 9ft. The width of the walkway around the garden is unknown, but it will be the same on every side.
a)what is the perimeter of the walkway along the outer edge... | 4 | [
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0.0289306640625,
-0.0478515625,
0.03466796875,
0.06103515625,
-0.0019073486328125,
0.0439453125,
-0.02685546875,
0.0654296875,
... | 228 | 228 | |
Re: st: k-sample tests for differences in proportions
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: k-sample tests for differences in proportions
From May Boggess <mboggess@stata.com>
To statalist@hsphsun2.harvard.edu
Subject Re: st: k-sample tests for differences in prop... | 5 | [
0.1064453125,
0.0791015625,
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-0.01519775390625,
0.03271484375,... | 229 | 229 | |
Mathematics for aplications development.
October 29th 2009, 06:53 PM #1
Newbie
Joined
Oct 2009
Posts
1
Mathematics for aplications development.
Hi,
im doing test revision. Could someone take me through the steps to solving these two questions, the actuall answers and working isnt important, these ar... | 5 | [
-0.027099609375,
0.06298828125,
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0.03955078125,
-0.0712890625,
0.034912109375,
-0.033203125,
-0.03466796875,
... | 230 | 230 | |
Second Order Differential Equation (Can you check my work?)
February 22nd 2013, 01:57 PM #1
Hi,
I just started working second order DE's, and I want to make sure I'm doing it correctly. Do you see any problem with the process below? Sorry that it looks so messy, I don't know how to code.
Question:
y... | 5 | [
-0.09814453125,
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... | 231 | 231 | |
Fast and optimal broad-band Stokes/Mueller polarimeter design by the use of a genetic algorithm
Β« journal navigation
Fast and optimal broad-band Stokes/Mueller polarimeter design by the use of a genetic algorithm
Optics Express, Vol. 18, Issue 22, pp. 23095-23103 (2010)
http://dx.doi.org/10.1364/OE.18.023095
Abstra... | 4 | [
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-0.00125885009765625,
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... | 232 | 232 | |
to
Bignum
An infinite-precision calculator and function library for Miranda
... | 5 | [
-0.0712890625,
0.01416015625,
-0.0196533203125,
-0.04833984375,
-0.03857421875,
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-0.064453125,
-0.04833984375,
0.... | 233 | 233 | |
Converting between conditional distributions for Gibbs sampling using Bayes Theorem
May 29th 2010, 01:22 PM #1
Newbie
Joined
May 2010
Posts
1
Converting between conditional distributions for Gibbs sampling using Bayes Theorem
Hi,
I am working on writing a Gibbs sampler to do hypothesis testing in a ... | 4 | [
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0.060791015625,
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0.012451171875,
0.058349609375,
0.07080078125,
0.08203125,
-0.06396484375,
0.0037... | 234 | 234 | |
[SOLVED] Factoring a quadratic
September 10th 2008, 07:16 PM
topsquark
[SOLVED] Factoring a quadratic
Can someone please tell me why this works? (It works in general apparently.)
Let's factor
$12x^2 - 25x + 12$
Take the leading coefficient (12) and multiply it into the constant and rewrite this as
... | 4 | [
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0.03515625,
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0.0478515625,
0.01214599609375,
0.0678... | 235 | 235 | |
Riemann Zeta function
February 23rd 2010, 03:31 AM
EinStone
Riemann Zeta function
Hey, so following problem:
I want to express $(1-2^{1-s})*\sum_{n=1}^{\infty}\frac{1}{n^s}$
as a Dirichlet series, i.e. as a series of the form
$\sum_{n=1}^{\infty}\frac{a_n}{n^s}$ where $a_n$ is any complex sequence... | 5 | [
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0.080078125,
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0.0225830... | 236 | 236 | |
Maths - Integration by parts
Number of results: 8,477
Maths - Integration by parts
Integral x^2 sin(x) dx
November 7, 2012 by Anonymous
Maths -Integration by parts
Intergral square root of x sin(x) dx
November 7, 2012 by Anonymous
Maths - Integration by parts
Use the partial ractions to find The integral (3x^2-x+2)/... | 5 | [
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-0... | 237 | 237 | |
Posts by
Posts by Avi
Total # Posts: 18
chemistry
A saturated solution of NaCl (dissolved in water) has a concentration of 4.01 M at a given temperature. The solution has a volume of 1 L (1000 mL). If the water were to evaporate until the volume of
the solution is 500 mL (and then stirred), what would the concentrat... | 4 | [
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-0.03857421875,
0.1005859375,
0.04638671875,
-0.021484375,
-0.16796... | 238 | 238 | |
dding
A clever trick mathematicians use is to add things up two different ways. In particular, I've noticed several seemingly different areas of math where a quantity can be represented on a
two-dimensional grid, and then the value can be sliced vertically, and added, or it can be sliced horizontally and added. In the... | 4 | [
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... | 239 | 239 | |
3 more problems
July 30th 2009, 03:22 PM
garbles
3 more problems
1. 2ln(3x) = 8
2. Logx + log (x + 15) = 2
3. Ln (x - 4) - ln (x + 1) = ln 6
July 30th 2009, 03:28 PM
DeMath
July 30th 2009, 03:35 PM
garbles
Thanks just need the last 2
July 30th 2009, 03:35 PM
DeMath
$\underbrace {\ln \le... | 4 | [
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0.023193359375,
-0.017333984375,
0.07275390625,
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-0.028564453125,
... | 240 | 240 | |
Binary Numbers: Counting Bits
In a previous article, I described the basics of binary arithmetic and gave a function to display the binary representation of a number. Here, weβll look at several ways to count the set (1) bits in
a number.
First of all, why would you want to count bits? Bitsets. If you use bitsets as a... | 5 | [
0.06494140625,
0.041015625,
-0.07666015625,
-0.03076171875,
-0.041015625,
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-0.0142822265625,
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-0.02783203125,
-0.06640625,
0.026123046875,
-0.015869140625,
-0.049560546875,
0.... | 241 | 241 | |
Is this f'(x) or partial derivative?
Posted by Anonymous on Wednesday, October 14, 2009 at 3:42pm.
Find d VC/ d y = ((y/240)^2)(w)
= 2yw/240^2 + 0 + y^2/240^2
but final answer is....
= 2yw/240^2
So, is the question asking for partial derivative or first derivative? I think partial because the final answer only too... | 5 | [
-0.055419921875,
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0.060546875,
-0.0022430419921875,
0.09326171875,
-0.0537109375,
-0.01165771... | 242 | 242 | |
integers
Show that no integer u=4n+3 can be written as u = a^2 + b^2 where a,b are integers.
Hello,Fact : For any integer m, $m^2 \equiv 0 \text{ or } 1 (\bmod 4)$ Proof : A number m can only be even or odd. If it's even, it can be written m=2k, in which case, $m^2=4k^2 \equiv 0 (\bmod 4)$
If it's odd, it can be writt... | 4 | [
0.03955078125,
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0.06689453125,
0.0412597... | 243 | 243 | |
Imaginary, arg problem
March 7th 2010, 03:02 AM #1
Member
Joined
Dec 2009
Posts
180
Imaginary, arg problem
Hi I have this problem writting an expression in polar form, I have no issue finding the correct absolute value, but the argument turns out wrong.
The expression is: $\frac{(2+2i)(1+\sqrt{3})}{3... | 5 | [
0.00054168701171875,
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... | 244 | 244 | |
Homework Help
business - Gin, Wednesday, March 30, 2011 at 1:05pm
here's for everyone who had or needs this question answered and hasn't realized it has two answers!!!(
blame the jerk who wrote it!)
STEP 1:
For each discount, calculate a value for optimal order size Q*, using the following Equation.
Economic Order Q... | 5 | [
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0.001739501953125,
0.08984375,
-0.039306640625,
-0.021240234375,
-0.10498... | 245 | 245 | |
analytic running power-speed model, revisted
In a previous post in April 2010, I made an effort to model running power. I recently realized in looking back on this (actually, in reflecting on a comment in Runner's World on the claimed
difference between running on the road versus a treadmill) that I'd made an error in ... | 4 | [
-0.03857421875,
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0.03564453125,
0.0289306640625,
0.0517578125... | 246 | 246 | |
Homework Help
Posted by Priscilla on Wednesday, February 22, 2012 at 10:25am.
In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 4.3 m/s at an angle of 15 degrees below the horizontal. It is released 0.80m above
the floor.
What horizontal distance does th... | 4 | [
0.01104736328125,
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Canabalt Revisited: Gamma Distributions, Multinomial Distributions and More JAGS Goodness
Introduction
Neil Kodner recently got me interested again in analyzing Canabalt scores statistically by writing a great post in which he compared the average scores across iOS devices. Thankfully, Neilβs made his
code and data fr... | 4 | [
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0.0732421875,
-0.05395... | 248 | 248 | |
Find the acute angle between the plane 2(x-1)+16(y-2)+2(z-1) and the xy-plane
October 14th 2010, 10:46 AM #1
Member
Joined
Oct 2010
Posts
150
Find the acute angle between the plane 2(x-1)+16(y-2)+2(z-1) and the xy-plane
Problem:
Find an equation of the tangent plane to the ellipsoid x^2+4y^2+z^2=18 ... | 5 | [
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0.0206298828125,
-0.0205078125,
-0.1357... | 249 | 249 | |
Math - Derivative of a polynomial function
Posted by Anonymous on Saturday, October 16, 2010 at 6:35am.
The population, p in thousands of bacteria colony can be modelled by the function p(t)=200+20t-t^2, where t is the time, in hours, t is greater than or equal to zero.
a) Determine the growth rate of the bacteria po... | 4 | [
-0.076171875,
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-0.03564453125,
-0.052490234375,
0.004... | 250 | 250 | |
Homework Help
Posted by David on Tuesday, September 20, 2011 at 8:10pm.
Geometric Proofs....
Write a justification for each step
Given: AB = EF, B is the midpoint of Line AC and E is the midpoint of Line DF.
1. B is the midpoint of Line AC and E is the midpoint of Line DF.
2. Line AB is congruent to Line BC and Li... | 4 | [
-0.08349609375,
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0.0012969970703125,
0.003753662109375,
-0.1079101562... | 251 | 251 | |
Homework Help
Posted by laila on Thursday, April 12, 2012 at 1:13pm.
find a square root of -7-24i
β’ calculus - Steve, Thursday, April 12, 2012 at 3:02pm
referring to a standard 7-24-25 right triangle,
(x,y) = (-7,-24)
(r,ΞΈ) = (25,Ο+arctan(24/7)) = (25,4.4286)
square root:
(r,ΞΈ) = (5,2.2143)
... | 4 | [
-0.00531005859375,
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-0.02587890625,
0.00286865234375,
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0.0191650390625,
-0.115234375,
... | 252 | 252 | |
Homework Help
Posted by hadia on Monday, September 5, 2011 at 6:08pm.
find the volume of the solid obtained by revolving the region bounded by the graphs of y=2+4x-x^2 and y=2 about the line y=2.
β’ calculus 2 - Mgraph, Monday, September 5, 2011 at 6:59pm
y-2=4x-x^2
The volume=pi*Int.[0,4](4x-x^2)^2dx=
... | 5 | [
0.049072265625,
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0.0255126953125,
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-0.00244140625,
0.042724609375,
-0.071289062... | 253 | 253 | |
Homework Help
Posted by Joshua on Monday, December 5, 2011 at 1:34pm.
Suppose that z1=6-8i. Find:
A. The Trig Form of the complex number z1, where your theta is in degrees.
B. The Trig form of z1*z2, where
z2=5[cos(60degrees)+isin(60degrees)]
C. The Trig Form of (z1)^4
β’ precalc - Steve, Monday, December 5, 201... | 5 | [
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0.0203857421875,
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-0.0478515625,
-0.12890625,
-0.0349121... | 254 | 254 | |
Zero-Sum
Game Theory: An Introductory Sketch
Zero-Sum Games
Roger McCain's Game Theory: A Nontechnical Introduction to the Analysis of Strategy (Revised Edition) is available in Asia now and will be available in USA, UK, Europe and the rest of the World in
October. Should you require the title for fall term, special... | 5 | [
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0.0087890625,
0.01214599609375,
0.033447265625,
-0.0064697265625,
... | 255 | 255 | |
Homework Help
Posted by Anderson on Monday, April 16, 2007 at 11:00pm.
A bicycle starts at the origin of a circular track that has a circumference of 126 m and travels at a constant speed a distance s = 38.0 m in a time t = 12s.
a)what is the angular displacement (in rad) of the bicycle from its starting position? r=... | 4 | [
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0.036865234375,
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... | 256 | 256 | |
e
(Section 21)
In Calculus, one of the first topics we discuss is the rate of change of a function.
What is a rate of change? Rate of change of a function is the same as the slope of a function. Recall that slope is defined a... | 4 | [
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Homework Help
Posted by Robert on Thursday, October 25, 2012 at 1:49pm.
3. Identify the vertex and the axis of symmetry of the graph of the function y = 3(x + 2)2 β 3. (1 point)
A- vertex: (2, β3); axis of symmetry: x = 2
B- vertex: (β2, β3); axis of symmetry: x = β2
C- vertex: (2, 3); axis of symmetry: x = 2
D- v... | 4 | [
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product of primes II
December 27th 2009, 04:36 AM #1
Newbie
Joined
Dec 2009
Posts
19
product of primes II
Let $q_i, p$ be odd primes, $k \ge 2$ integer
If $\prod_{i=1}^{k}q_i = p^5+2$
then
$<br /> \prod_{i=1}^{k}(q_i-1) ot= p^5-p^4+2<br />$
Last edited by wauwau; December 27th 2009 at ... | 5 | [
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Homework Help
Posted by Haley on Tuesday, November 20, 2012 at 3:21pm.
cos^2x-sin^2 x+1=cos x
β’ pre-calc help !!!!!!! - Damon, Tuesday, November 20, 2012 at 3:33pm
sin^2 x = 1 - cos^2 x
so we have
cos^2 x - 1 + cos^2 x + 1
or
2 cos^2 x
on the left
so
2 cos^2 x = cos x
cos x =... | 4 | [
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How to Solve a System of 5 Equations
by Β» Wed Feb 29, 2012 1:49 am
Hello,
I would like to solve this system of equations:
0=-0.0000011*L*R + 0.31*C β 0.08*R + 0.06*0.8*A + 0.000000000021;
0=0.0000011*L*R β 0.41*C + 0.042*0.45*B;
0=0.08*R - 0.06*A;
0=0.1*C - 0.042*B;
0=-0.0000011*L*R + 0.31*C
Where my variables ar... | 5 | [
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-0.0... | 261 | 261 | |
Homework Help
Posted by Meg on Wednesday, May 25, 2011 at 4:48pm.
PLEASE HELP ME, I HAVE AN EXAM TOMORROW AND THIS THE ONLY QUESTION I HAVE. THE AREA OF A REGULAR HEXAGON IS 35 IN SQUARED. FIND THE LENGTH OF A SIDE. ROUND YOUR ANSWER TO THE NEAREST TENTH. I KNOW
THE ANSWER IS 3.7 BUT I DON'T KNOW HOW TO GET IT!!
β’ ... | 4 | [
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Homework Help
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International
Space Station. Due to mishandling of units by a technician, you find yourself in the same orbit will fail ... | 5 | [
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Optimization Problem
April 15th 2010, 07:56 PM #1
Newbie
Joined
Apr 2010
Posts
15
Optimization Problem
I'm doing good with calculus but I'm having trouble deciphering optimization problems. Two currently:
Find the area of the largest rectangle that can be inscribed in a right triangle with legs of l... | 4 | [
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0.007... | 264 | 264 | |
Homework Help
Posted by Liz on Monday, November 30, 2009 at 12:24am.
I don't know how to solve 12x(2)-15x=0 using the quadratic equation ax+bx+c=0 with this question I am unsure of what a, b and c are supposed to be, therefore I do not know how to solve this! Please
help!
β’ Algebra - drwls, Monday, November 30, 200... | 4 | [
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Quick PDEs Question! BVPs: time-dependent heat gen in a bar
April 21st 2009, 08:59 AM #1
Newbie
Joined
Oct 2008
Posts
12
Quick question, what would be the general method for solving this type of problem;
(d/dt)u - (d2/dx2)u = h(x, t)
with homogeneous BCs:
u (0, t) = 0
u (L, t) = 0,
... | 5 | [
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Theorem 2.2
Theorem 2.2: (The parametric form of the Ruler Axiom) Let t be a real number. Let A and B be two points. Let
A = (x[1], y[1])
and
... | 5 | [
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Rational Expressions
Solving Rational Equations
To solve a rational equation, such as , rewrite all the terms of the equation as fractions with a common denominator. For example, can be rewritten as:
Next, eliminate the denominator:
4x ^2 - x + x ^2 - x - 3 = x ^2 + 5x - 6
Solve the equation:
5x ^2 -2x - 3 = x ... | 4 | [
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-0.0005073547... | 268 | 268 | |
Homework Help
Posted by Anonymous on Wednesday, February 29, 2012 at 11:15am.
Find the volume when the area bounded by f(x) = xe^x, y = e, and the y-axis, is revolved around the y-axis.
β’ calculus - Steve, Wednesday, February 29, 2012 at 12:57pm
xe^x = e when x = 1
using shells,
v = Int(2*pi*r*h dx)[0... | 5 | [
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-0.0015792846679687... | 269 | 269 | |
Homework Help
Posted by Anonymous on Tuesday, January 3, 2012 at 3:08pm.
The coordinates of the point where the normal to the curve y= 1/3 x^3 + 1/2 x^2 + x at x=1 intersects the y-axis are what?
β’ Calc - Reiny, Tuesday, January 3, 2012 at 3:21pm
dy/dx = x^2 + x + 1
at x=1 ,slope of tangent is 1+1+1 = 3
... | 4 | [
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-0.1025390625,
... | 270 | 270 | |
Measuring nanoparticle size using optical surface profilers
Β« journal navigation
Measuring nanoparticle size using optical surface profilers
Optics Express, Vol. 21, Issue 13, pp. 15664-15675 (2013)
http://dx.doi.org/10.1364/OE.21.015664
Abstract
Optical surface profilers are state-of-the-art instruments for measu... | 4 | [
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0... | 271 | 271 | |
Homework Help
Posted by Bobby Jones on Sunday, September 30, 2012 at 2:01pm.
Determine the equation of combined, then solve for the missing value.
Variation x varies directly with y and z.
x=5 when y=10 and z=5. find x when y=20 and z=10
β’ ALGEBRA 1 - Reiny, Sunday, September 30, 2012 at 3:08pm
"x varies dir... | 4 | [
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0.056396484375,
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0.024... | 272 | 272 | |
Belinda, Math
Posted by Jasmine20 on Wednesday, January 24, 2007 at 10:40pm.
Thank you I did figure it out i think:
so the problem was
((w)-(1)/(4))^2
The final answer that i got was
w^2-(1)/(2)w+ (1)/(16)
Sorry, no again. :) Make sure you really look at how to multiply binomials and FOIL them out. It will come b... | 4 | [
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... | 273 | 273 | |
Stokes Theorm
October 27th 2012, 03:00 AM
mrmaaza123
Stokes Theorm
I am attempting to solve a question a question of stokes theorm, but i have got stuck with this question in which i have to first find the equation of a line passing through three points.
The points are (3,0,0),(0,3/2,0),(0,0,3).
I remem... | 5 | [
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-0.162109375,
-0.09... | 274 | 274 | |
One more normalizer q
If H is a subgroup of G, show that H is normal to the normalizer $(N(H))$
$H$ is clearly a subgroup of $N_G(H)$. To see that $H \lhd N_G(H)$, take any $x \in N_G(H)$. By definition, $xHx^{-1}=H$. Since this is true for all $x \in N_G(H)$, the statement follows.
| 4 | [
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0.002... | 275 | 275 | |
Stuck on a solid of rev problem
February 12th 2013, 12:21 PM #1
Member
Joined
Jul 2012
From
United States
Posts
87
Thanks
3
Stuck on a solid of rev problem
The problem is: Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. $y=1/x^2$ ... | 4 | [
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... | 276 | 276 | |
Homework Help
Posted by Mathematics on Wednesday, January 11, 2012 at 8:35am.
In four years' time, a father will be three times as old as his son. Six years ago, he was seven times as old as his son. How old are they now? Explain your workings. Thanks
β’ Kathie - Reiny, Wednesday, January 11, 2012 at 8:50am
son... | 4 | [
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Homework Help
Posted by Roberto on Saturday, February 12, 2011 at 3:22pm.
You are an artillery offcer attached to Gaius Julius Caesar's Xth Legion in the Gallic War
(1st C. BCE). You are responsible for a catapult, a device with a long spoonlike arm used
to lob stones or pumpkins over the walls of Gallic oppida. The... | 5 | [
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0.021... | 278 | 278 | |
Roots of Unity represented on a regular polygon - lenght of side.
August 31st 2011, 01:51 PM
Hyunqul
Roots of Unity represented on a regular polygon - lenght of side.
Hello,
I had an assignment that required me to solve for the roots of unity for various equations of the form z^n-1=0. Then , I was asked to ... | 5 | [
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-0.0034... | 279 | 279 | |
Homework Help
Posted by Aldwin on Wednesday, November 28, 2012 at 10:26am.
The coordinates of the end-points of a line segment PQ are P(3,7) and Q(11,-6). Find the coordinates of the point R on the y-axis such that PR = QR.
Please include the workings, as I would like to be able to perform these problems unassisted i... | 4 | [
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-0.05590820312... | 280 | 280 | |
Homework Help
Posted by Mary on Sunday, October 10, 2010 at 7:09pm.
how to i graph the inequality :
y<x squared - 3x + 15
whats my x and whats my y ? should i factor ?
β’ Algebra 2 - Henry, Tuesday, October 12, 2010 at 6:50pm
To graph the inequality, graph :
Y= x^2 - 3x + 15 = 0,
Step 1. Find the coo... | 4 | [
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-0... | 281 | 281 | |
Homework Help
Posted by Sandra on Wednesday, May 14, 2014 at 6:49pm.
Simplify 4(sqrt)6/(sqrt)30 by rationalizing the denominator. Show how.
β’ ALGEBRA - Steve, Wednesday, May 14, 2014 at 7:01pm
4β6 / β30
multiply top and bottom by β30 to get
4β6β30 / 30
4β180 / 30
4β36β5 / 30
4*6β5 / 30
... | 4 | [
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Integral Test/Comparison Test
January 27th 2009, 10:51 AM
Link88
Integral Test/Comparison Test
infinity over Sigma n=1 n^2/n^3 + 1 Use the integral test to see if the infinite series converges.
infinity over Sigma n=2 n^2+1/n^3.5-2 Use either the Comparison Test or the Limit Comparison Test to see if th... | 5 | [
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-0.0174560546... | 283 | 283 | |
Heteroscedasticity
The OLS estimators remains unbiased and consistent in the presence ofΒ Heteroscedasticity, but they are no longer efficient not even asymptotically. This lack of efficiency makes the usual hypothesis
testing procedure of dubious value. Therefore remedial measures may be called. There are two approach... | 4 | [
0.0150146484375,
0.0022735595703125,
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0.09521484375,
... | 284 | 284 | |
Comparing two ways to fit a line to data
Suppose you have a set of points and you want to fit a straight line to the data. Iβll present two ways of doing this, one that works better numerically than the other.
Given points (x[1], y[1]), β¦, (x[N], y[N]) we want to fit the best line of the form y = mx + b, best in the ... | 5 | [
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SAT: Improve SAT Score with SparkNotes: Solid As A Rock
20.1 A Basic Review of the Basics 20.6 Circles
20.2 A Note on Notation 20.7 Solid As A Rock
20.3 Angles and Lines 20.8 Geometric Visualizations
20.4 Triangles 20.9 Coordinate Geometry
20.5 Polygons
Solid As A Rock
... | 4 | [
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Homework Help
Posted by Hillary on Thursday, September 24, 2009 at 10:38pm.
Hi!
My question is:
Given that f is a function defined by f(x) = (2x - 2) / (x^2 +x - 2)
a) For what values of x is f(x) discontinuous?
b) At each point of discontinuity found in part a, determine whether f(x) has a limit and, if so give t... | 4 | [
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Posts by
Posts by asdf
Total # Posts: 44
Math
The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.
Math
Solution 1: Triangles ADE and BFE are similar since \overline{AD}\pa... | 4 | [
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Homework Help
Posted by Pam on Sunday, December 3, 2006 at 5:23pm.
Roll two fair dice. what is the probability that you get a 2 and a 5 without regard to which is on which die?
What is the probability of at least one 2 or one 5?
What is the probability of a sum of 7?
"what is the probability that you get a 2 and a ... | 5 | [
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-0.0... | 289 | 289 | |
Matrix help
May 20th 2012, 10:56 PM
Hooperoo
Matrix help
Hi guys. Strange question here but i dont know how to solve and its for revision.
let A = 2x2 matrix ( 2 is the top left entry, 1 the top right entry, 7 the bottom left and 4 the bottom right)
B = 2x2 matrix (3 the top left entry, x the top right... | 4 | [
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Homework Help
Posted by student on Saturday, June 30, 2007 at 11:28am.
what formula do i use for the following problem:
which of the following investments is larger after 19years?
a) $7500 is deposited annually and earns 4.5% interest compounded annually.
b)$600 is deposited monthly and earns 4.5% interest compound... | 5 | [
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Cylindrical Shells Help
November 7th 2006, 02:36 PM #1
Junior Member
Joined
Aug 2006
Posts
30
Cylindrical Shells Help
R is bounded below by the $x-axis$ and above by the curve $y=2cosx,0 \leq x \leq \frac{\pi}{2}$. Find the volume of the solid generated by revolving R around the $y-axis$.by the method of... | 5 | [
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Homework Help
Posted by Jace on Friday, May 24, 2013 at 1:15am.
I'm having trouble with a geometric series problem.
Determine if
the infinite summation of
(-3)^(n-1)/4^n
converges or diverges. If it converges, find the sum.
So the answer says that
sigma -3^(n-1)/4^n
= 1/4 * sigma (-3/4)^(n-1)
How did they fact... | 5 | [
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design of an electrically pumped
micro-disk laser
Β« journal navigation
A simple perturbative analysis for fast design of an electrically pumped micro-disk laser
Optics Express, Vol. 17, Issue 1, pp. 70-79 (2009)
http://dx.doi.org/10.1364/OE.17.000070
Abstract
A perturbative analysis is proposed to estimate optical... | 4 | [
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Problem 5
6. A student took a multiple choice test and guessed on three questions. Each question had 5 possible answers. Let x denote the number of correct answers.
a) What are n and p for this problem?
b) Complete the following probability distribution.
... | 4 | [
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Posts by
Total # Posts: 20
pys202
Contrast 2 theories or perspectives from the late stage adult development?
psy202
YES I WOULD NEED SOME HELP ON ANSWERING THE QUESTIONS?
psy202
identify how each approach informs or impacts your life,particularly as you prepare for your senior years?
psy202
discuss the benefits(pr... | 5 | [
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Homework Help
Posted by Anonymous on Monday, March 22, 2010 at 2:14pm.
Suppose sin theda= β 3/5 and theda is a Quadrant III angle.
Find the exact value of sin 2 theda and cos 2 theda.
β’ trig - tradejack, Monday, March 22, 2010 at 2:39pm
It is theta not theda. Quadrant III= a reflex angle greater than 180 degr... | 4 | [
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South African Journal of Science
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PrintΒ versionΒ ISSN 0038-2353
S. Afr. j. sci.Β vol.104Β no.5-6Β PretoriaΒ May/JuneΒ 2008
Β
... | 4 | [
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Applied Time Series Analysis
Any time series with a constant time increment (e.g., day, month, year) is a candidate for use in the course. Examples are daily precipitation measurements, seasonal total streamflow, summer mean air
temperature, annual indices of tree growth, indices of sea-surface temperature, and the dai... | 4 | [
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