content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Mass of fuel burned in car over distance with changing mass
1. The problem statement, all variables and given/known data
Hi! I seem to be having some difficulty with this one, any help would be appreciated. There is a car, assume it for simplicity to be a rectangular prism of dimensions l,w and h. The car is moving at... | 4 | [
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Rationalise the denominator and simplify
Is that $\frac{1}{2\sqrt{7}} + 2\sqrt{3} - \frac{1}{3\sqrt{7}} + \sqrt{3}$ or $\frac{1}{2} \sqrt{7} + 2\sqrt{3} - \frac{1}{3} \sqrt{7} + \sqrt{3}$ ? I'll assume its the first one since we are
supposed to rationalise a denominator. $\frac{1}{2\sqrt{7}} + 2\sqrt{3} - \frac{1}{3\sq... | 4 | [
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Bipancyclic Properties of Faulty Hypercubes
ISRN Discrete Mathematics
Volume 2012 (2012), Article ID 308595, 8 pages
http://dx.doi.org/10.5402/2012/308595
Research Article
Bipancyclic Properties of Faulty Hypercubes
Department of Computer Science and Information Engineering, Da-Yeh University, Changhua 51591, Taiwan... | 4 | [
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Relaxed Extragradient Methods with Regularization for General System of Variational Inequalities with Constraints of Split Feasibility and Fixed Point Problems
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 891232, 25 pages
http://dx.doi.org/10.1155/2013/891232
Research Article
Relaxed Extragradient Met... | 4 | [
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number exponentiation
October 25th 2010, 06:30 AM #1
Newbie
Joined
Oct 2010
Posts
5
number exponentiation
"Is there an exponent of number $3 ( 3^x )$ that ends with 0001 in decimal system?" Hope you understood.
It can be written like this :
$3^x=10000*k+1$. Find x
Last edited by teps; Octobe... | 5 | [
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max/min problems
April 15th 2009, 12:20 PM
thebacontalks2me
max/min problems
I'm at my wits end with my Calculus homework. I have a test tomorrow and I must have an 80% on every assignment or I will be unable to take the test. I'm done with a lot of it but at this point
my brain is mush and I hit a brick wal... | 5 | [
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Genetic Association Analysis Using Sibship Data: A Multilevel Model Approach
Abstract
Family based association study (FBAS) has the advantages of controlling for population stratification and testing for linkage and association simultaneously. We propose a retrospective multilevel
model (rMLM) approach to analyze sibs... | 4 | [
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Patent US4864453 - Protective relay with selective phase selection for double lines
TECHNICAL FIELD
For reasons of security, extension and economy, and other reasons, sometimes double electric power transmission lines are used between two stations. In practice, each station is then provided with a
busbar system to whi... | 4 | [
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A Faster Gradient Ascent Learning Algorithm for Nonlinear SVM
ISRN Applied Mathematics
Volume 2013 (2013), Article ID 520635, 11 pages
http://dx.doi.org/10.1155/2013/520635
Research Article
A Faster Gradient Ascent Learning Algorithm for Nonlinear SVM
^1Department of Informatics and Cybernetics, Bucharest University... | 4 | [
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Patente US7080310 - Forward error corrector
CROSS-REFERENCE TO RELATED APPLICATION
This patent application is a continuation of U.S. patent application Ser. No. 10/382,400 filed Mar. 6, 2003, now U.S. Pat. No. 6,684,364 which is a continuation of U.S. patent application Ser. No. 09
/951,998 filed Sep. 12, 2001 now U.S... | 4 | [
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Patent US6272477 - Hypertrapezoidal fuzzy dynamic state interpreter
RELATED APPLICATIONS
This application claims the benefit of U.S. Provisional Application No. 60/058,110 filed Sep. 5, 1997.
TECHNICAL FIELD OF THE INVENTION
This invention relates generally to the field of computer modeling and more specifically to ... | 4 | [
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S
The Iron Cross
Over the years there has been a lot of talk about a betting system called the Iron Cross. The attraction to this betting system is straight-forward – you will get paid whenever any number rolls,
except for the seven. Imagine, when the 4 hits, you get paid - when the 5 hits - you get paid, when the 6,... | 4 | [
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if (a,m)=1, then ax\equiv 1 (mod m) has a unique sol.
June 22nd 2011, 07:47 PM
dwsmith
if (a,m)=1, then ax\equiv 1 (mod m) has a unique sol.
if $(a,m)=1$, then $ax\equiv 1 \ (\text{mod} \ m)$ has a unique sol.
By Bezout, there exist $x,y\in\mathbb{Z}$ such that $1=ax+my$
Now, we can write that as:
... | 4 | [
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Somewhere i did mistake...
April 23rd 2008, 04:18 AM
ArmiAldi
Somewhere i did mistake...
Fin equation of the tangent line at the given value of x on the curve.
2xy - 2x + y = -14, x = 2
This is what i try.==>
2y + 2xdy - 2 + dy = 0
2*2y-2*2+y = -14
5y=-10
y=-2
2*(-2) +2*2dy -2 + dy = ... | 4 | [
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Proving a triangle is right-angled.
April 26th 2010, 09:53 AM #1
Junior Member
Joined
Nov 2009
Posts
25
Proving a triangle is right-angled.
Show that the triangle with vertices P(1,2,2), Q(7,-1,-1) and R(3,0,8) is right-angled.
My notes tell me that a triangle is only right angled if p.q = 0, but p.... | 4 | [
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Product of two continous functions
sutupidmath
Why on earth would he do so? Halls hints are quite straightforward.
To solve the problem and because it is fun. I agree, I provided a different (though very slightly) view.
HallsofIvy
lurflurf may has misread "continuous" as "differentiable".
theorem f is continuo... | 5 | [
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Poisson distribution question
April 27th 2011, 06:40 PM #1
Newbie
Joined
Apr 2011
Posts
6
Poisson distribution question
Q has Poisson dist. Q will be observed tomorrow for once. If Q turns out to be a certain #, such as k, the coin will be tossed k times. Let X be the number of times tails come up in k t... | 5 | [
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Double series and Integral Test
February 24th 2009, 06:38 PM #1
Newbie
Joined
Nov 2008
Posts
8
Double series and Integral Test
Hi! I need to show that this double series diverge: $\sum\limits_{m=1}^{\infty}\sum\limits_{n=1}^{\inft y}\frac{1}{(m+n)^2}$
I first used the Integral Test on the inner summ... | 5 | [
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7 men survive on 13 quarts
July 8th 2013, 11:01 AM #1
Newbie
Joined
Apr 2013
From
America
Posts
20
7 men survive on 13 quarts
7 men can survive on 13 quarts of water or 2 weeks. How many quarts are needed by 21 men to survive 4 weeks?
A) 78
B) 52
C) 39
D) 26
E) 13
Re: 7 men survi... | 4 | [
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Solving ODE with IVP
September 7th 2009, 09:21 PM #1
Junior Member
Joined
Jul 2009
Posts
37
Solving ODE with IVP
Ok, I'm stuck! I've tried everything and can't seem to solve this problem!
dy/dt+2y=1 y(0)=5/2; and find the value of the function t=3seconds
I first tried: dy=1-2y dt
then dy/1-... | 5 | [
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Coordination in the Decentralized Assembly System with Dual Supply Modes
Discrete Dynamics in Nature and Society
Volume 2013 (2013), Article ID 381987, 9 pages
http://dx.doi.org/10.1155/2013/381987
Research Article
Coordination in the Decentralized Assembly System with Dual Supply Modes
^1Economic and Management Sch... | 5 | [
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Math Help
Let $a_{1}=\frac{5}{2}$ and $a_{n+1}=\sqrt{ a_{n}^{3} -12a_{n}+\frac{20n+21}{n+1}}$ Prove that the sequence $(a_{n})$ converges and find its limit
A different approach: IF that sequence converges, then, calling the limit L, we must have lim a_{n+1}= \SQRT{lim(a_n^3)- 12lim(a_n)+ lim((20n+ 1)/(n+1))} which g... | 5 | [
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How to figure out answer to logarithm
First, of course, x= 0 is not a solution because log(0) is not defined. So you can divide both sides by x to get log(x)= 0.1 x. You can now write this as [itex]x= e^{0.1x}[/itex]. If you let y=
-0.1x, that becomes [itex]-y/0.1= e^{-y}[/itex]. Now multiply on both sides by [itex]-0.... | 5 | [
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Graphs Based on BCK/BCI-Algebras
International Journal of Mathematics and Mathematical Sciences
Volume 2011 (2011), Article ID 616981, 8 pages
http://dx.doi.org/10.1155/2011/616981
Research Article
Graphs Based on BCK/BCI-Algebras
^1Department of Mathematics Education (and RINS), Gyeongsang National University, C... | 5 | [
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Math Forums @ Math Goodies - Equations with Trig functionstesting headertesting left navtesting footer
Math Goodies is a free math help portal for students, teachers, and parents.
... | 4 | [
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Patent US20030030816 - Nonlinearity error correcting method and phase angle measuring method for displacement measurement in two-freqency laser interferometer and displacement measurement system using the same
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a phase... | 4 | [
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Couple of questions about renormalization schemes (based largely on Srednicki CH27)
Hi,
I'm reading through CH27 of Srednicki at the moment, and struggling to understand a couple of concepts.
1) He states that in the MS (bar) scheme the location of the pole in exact propagator is no longer when [tex] k^2=-m^2 [/tex],... | 4 | [
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Matrix problems
July 18th 2013, 09:19 AM
Paze
Matrix problems
Hi, I have a few matrix problems I am to solve.
It says: Solve the following equations using matrices:
Attachment 28857
I'm unfamiliar with this so I would like a hint on where to learn this. I understand what a matrix is but this seems... | 5 | [
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0.055419921875,
0.0205078125,
0.016357421875,
0.07080078125,
-0.050048828125,
0.03515625,
-0.0595703125,
-0.068359375,... | 22,327 | 22327 | |
College physics problem.
chonkyfire
1.
Starting from the origin, a car accelerates on a level road from rest at a(A)=-2.00 m/s^2 until T(1)=20.0s. The velocity is then held constant until T(2)=40.0s, and then the car accelerates at a(B)=
5.00m/s^2 until T(3)=50.0s.
question: What is the final position of the car?
... | 4 | [
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-0.007263... | 22,328 | 22328 | |
A Question related to Co-ordinate Geometry
DarkStalker
I lost you here. What family are you talking about? I know how to find the intersection of 2 lines (by simultaneously solving them), but how am I supposed to yield a value when I don't know what y=
ax+b is? If you could please provide me with a solution I'd be ... | 4 | [
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... | 22,329 | 22329 | |
Simultaneous eqution i think
March 9th 2013, 04:41 PM
Zashmar
Simultaneous eqution i think
G'day
here is the question ;)
Bobby and Kym are two hikers. Bobby walks at 3klms/h and kym walks at 4klm/h. bobby is exactly klm due west of kym. they start walking immediatley. bobby walks due east and kym walks d... | 5 | [
0.0213623046875,
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... | 22,330 | 22330 | |
Forecasting Computer Products Sales by Integrating Ensemble Empirical Mode Decomposition and Extreme Learning Machine
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 831201, 15 pages
http://dx.doi.org/10.1155/2012/831201
Research Article
Forecasting Computer Products Sales by Integrating Ensemble ... | 4 | [
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Simplifying a complex rational
November 14th 2010, 06:03 AM
Foxlion
Simplifying a complex rational
I am having a rather frustrating time simplifying this expression...
{[1/(x+h)^2]-[1/x^2]}/h
my first step as instructed by my pre-calculus textbook is to multiply [x^2(x+h)^2] to both the numerator and ... | 4 | [
0.058349609375,
0.058349609375,
0.0296630859375,
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-0.05712890625,
0.04736328125,
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0.052734375,
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0.033447265625,
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0.08251953125,
0.04052734375,
0.035644... | 22,332 | 22332 | |
Find the set for "m" so that the graphs of y=mx and y=x^2+m intersect a single poi
please help!! find the set for "m" so that the graphs of y=mx and y=(x^2)+m intersect in a single point.
First, we gotta set $f(x)=mx$ and $g(x)=x^2+m$, now set $f(x)=g(x)$ $x^2+m-mx=0\implies x^2-mx+m=0$ The discriminant of this must ... | 4 | [
0.061279296875,
0.01611328125,
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0.0322265625,
-0.06689453125,
0.00982666015625,
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0.0281982421875,
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0.13671875,
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-0.01129150390625,
0.005401611328125,
0.1279296875,
0.056396484375,
-0.0229492... | 22,333 | 22333 | |
A Hybrid Metaheuristic for Multiple Runways Aircraft Landing Problem Based on Bat Algorithm
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 742653, 8 pages
http://dx.doi.org/10.1155/2013/742653
Research Article
A Hybrid Metaheuristic for Multiple Runways Aircraft Landing Problem Based on Bat Algorithm
... | 4 | [
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-0.... | 22,334 | 22334 | |
a little bit confused! conics
October 30th 2006, 09:11 AM #1
Newbie
Joined
Oct 2006
Posts
7
the question is as follows: the vertex angle of a double napped cone is 105 degrees the angle 0 is the angle measured from the axis to the cutting plane. for what angle 0, or range of values for
0, does the cut... | 4 | [
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0.0283203125,
-0.07275390625,
-0.04... | 22,335 | 22335 | |
probabilty
October 13th 2012, 12:29 AM
nitin1
probabilty
A fair dice is rolled. Each time the value is noted and running sum is maintained. what is the expected number of runs needed so that the sum is even. thanks
October 13th 2012, 05:46 AM
Nappy
Re: probabilty
The expected value of the dice face will ... | 5 | [
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measure theory question
May 15th 2008, 08:48 PM
squarerootof2
measure theory question
prove that an arbitrary intersection of σ-algebras is a σ-algebra, i.e. let {A_α} where α is in I (indexing set) be a collection of σ-algebras on a given set Ω. Prove that A=intersection {A_α}
(where α is in I)
May 15... | 5 | [
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Change of base
April 3rd 2011, 03:29 AM #1
Change of base
Hi,
I've just started Linear Algebra
I have one question i'd like some help with.
The line l $Oe_{1}e_{2$ is described by the equation $2x_{1} + 3x_{2} = 0$
Find an equation for the line in $OeŽ_{1}eŽ_{2}$
if $~~\begin{cases} eŽ_{1} ... | 5 | [
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... | 22,338 | 22338 | |
Fluid Mechanics - Equations of motion circular flows
It is very easy to prove that independence:
Look at the component equation in the angular direction.
Transfer the viscous term onto the other side; we gain therefore:
[tex]\frac{\partial{p}}{\partial\theta}=G(r,t)[/tex]
where G is some function solely of r and t, sin... | 4 | [
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0.0093... | 22,339 | 22339 | |
A Procedure for the Selection of Single Sampling Plans by Variables Based on Pareto Distribution
Journal of Quality and Reliability Engineering
Volume 2013 (2013), Article ID 808741, 5 pages
http://dx.doi.org/10.1155/2013/808741
Research Article
A Procedure for the Selection of Single Sampling Plans by Variables Base... | 5 | [
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0.05810546875,
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0.09570... | 22,340 | 22340 | |
Patent US20020186848 - Absolute public key cryptographic system and method surviving private-key compromise with other advantages
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not Applicable
REFERENCE TO A MICROFICHE APPENDIX
[0... | 5 | [
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0.0025482177734375,
... | 22,341 | 22341 | |
Lucas Sequence
April 5th 2007, 07:57 AM #1
Junior Member
Joined
Feb 2007
Posts
44
Lucas Sequence
Here is my problem, two parts.
The Lucas sequence is defined by
(L_n) = {1,3,4,7,11,18,...}
where the successive terms is found by adding the two previous terms.
1.) Show that the general ... | 5 | [
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0.0150146484375,
-0.056640625,
... | 22,342 | 22342 | |
Show that question regarding complex numbers
August 3rd 2010, 03:07 AM #1
Senior Member
Joined
Apr 2010
Posts
487
Show that question regarding complex numbers
The question:
Show that $Re(\frac{1 - z}{1 + z}) = 0$ for any complex number z with |z| = 1.
My attempt:
I tried finding the the res... | 5 | [
-0.09033203125,
0.00024127960205078125,
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0.0703125,
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0.0185546875,
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0.041259765625,
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0.072265625,
0.11328125,
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-0.026611328125,
0.050537109375,
-0.0... | 22,343 | 22343 | |
solve by systematic elimination...
March 22nd 2011, 08:21 PM #1
Senior Member
Joined
Aug 2009
Posts
349
solve by systematic elimination...
dx/dt = -5x - y
dy/dt = 4x-y
x(1) = 0 and y(1)= 1
ok so rewriting this problem....
Dx + 5x + y = 0
Dy - 4x + y = 0
rewriting it again I ... | 5 | [
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... | 22,344 | 22344 | |
Need Help With Basic Prob
May 5th 2008, 11:05 AM #1
Newbie
Joined
May 2008
Posts
1
que1> Find Number Of Zero's In The Expansion Of 79!?
que2>find Last Two Digit Of 95!?
do Snd The Method Also To Solve These Prob ?
Hello, speedtijo!
1) Find the number of zero's in the expansion of $79!$... | 4 | [
0.01470947265625,
0.00136566162109375,
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0.08447265625,
0.04296875,
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0.03173828125,
-0.078125,
0.049560546875,
0.058349609375,
-0.0162353515625,
0.062255859375,
-0.0111083984375,
-0.030517578125,
0.00034332275390625,
-0.050048828125,
0.0... | 22,345 | 22345 | |
Mean Square Exponential Stability of Stochastic Switched System with Interval Time-Varying Delays
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 623014, 12 pages
http://dx.doi.org/10.1155/2012/623014
Research Article
Mean Square Exponential Stability of Stochastic Switched System with Interval Time-Vary... | 5 | [
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-0.04638671875,
-0.01904296875,
0.060302734375,
0.0021514892578125,
-0.0463... | 22,346 | 22346 | |
Patent US5231668 - Digital signature algorithm
BACKGROUND OF THE INVENTION
1) Field of the Invention
The field of this invention is data integrity, and in particular generating and verifying a digital signature for a message or data file.
2) Background Art
When a message is transmitted from one party to another, th... | 4 | [
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0.02429... | 22,347 | 22347 | |
Compound Angles
October 31st 2012, 11:58 AM #1
Member
Joined
Jul 2011
Posts
140
Compound Angles
My answer is nearly right, except for the sign. Can anyone help me out here?
Many thanks.
Q. The diagram (see attachment) shows a triangle of height h metres. The angles A & B are such that $A+B=45^{... | 4 | [
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0.06005859375,
-... | 22,348 | 22348 | |
Shader Effects: Depth of Field
window.onload = function() { CurrentScene = new DepthOfFieldScene(); AppLoad(); } window.onunload = function() { AppStop(); }
Interactive Shader Effects Series
• Effects
□ Blending Layers
□ Convolution Filters (Emboss, Edge Detection)
□ Curves and Levels
□ Film... | 4 | [
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0.10986328125,
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-0.00555419921875,
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-0.0006561279296875,
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0.05224609375,
-0.0202636... | 22,349 | 22349 | |
Dynamics 1
September 2nd 2009, 01:08 AM #1
Junior Member
Joined
Aug 2009
Posts
25
Hello Everyone, please help me on this dynamics questions!
A particle has an initial velocity U and after travelling a distance d in time T along a straight path its velocity is V. The retardation of the particle is pro... | 5 | [
-0.0164794921875,
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0.035888671875,
0.1015625,
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0.03515625,
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0.0498046875,
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Energy of a deuteron
danielatha4
3. The attempt at a solution
I found the energy before the combining by
c^2 (1.6726×10-27+1.6749×10-27) = 3.0086*10^-10 J
this should equal the energy of the deuteron (mc^2) + the energy of the photon
energy of the photon in joules: 3.8292*10^-13 J
therefore:
3.0086*10^-10 = m[... | 5 | [
-0.041259765625,
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0.042236328125,
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0.032958984375,
0.01019287109375,
... | 22,351 | 22351 | |
sec^2(x)=4tan(x)
November 23rd 2012, 03:41 PM #1
sec^2(x)=4tan(x)
Hello
The question is solve on the interval $-\pi\leq x \leq\pi$
$\sec^2(x) = 4\tan(x)$
using the identity $\sec^2(x) = \tan^2(x) +1$
I get:
$\tan^2(x) - 4\tan(x) +1 = 0$
I can't factor that, so I completed the square ... | 4 | [
0.01373291015625,
0.0252685546875,
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0.041015625,
0.056884765625,
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0.017578125,
0.0751953125,
0.041015625,
-0.035888671875,
0.0751953125,
0.037353515625,
-0.04... | 22,352 | 22352 | |
Complex Analysis, Integration
April 29th 2009, 10:01 PM #1
Member
Joined
Oct 2008
Posts
147
Complex Analysis, Integration
Derive $\int_0^\infty \frac {(x^{a-1})} {(1+x^2)} dx= \frac {\pi} {(2\sin(\frac {\pi a} {2}))}, 0< a < 2$
Evaluate $\int_0^{2\pi} \frac {\cos \theta} {a-\cos \theta} d\theta, a>1... | 5 | [
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0.034912109375,
0.0306396484375,
0.03271484375,
0.00180816650390625,
-0.030029296875,
0.03369140625,
-0.05615234375,
-0.04638671875,
-0.03466796875,
-0.0244140625,
-0.066... | 22,353 | 22353 | |
Area Shared by Polar Curves
April 21st 2008, 06:51 PM #1
Member
Joined
Mar 2008
Posts
128
Area Shared by Polar Curves
Hi guys!!
Today I took my calc test and I'm curious to see if I did the last one right.
Set up the integral or integrals to find the area shared by the polar curves given by:
... | 5 | [
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0.0303955078125,
-0.038818359375,
... | 22,354 | 22354 | |
Cauchy Sequence in metric space problem
September 14th 2007, 08:00 AM #1
Super Member
Joined
Mar 2006
Posts
705
Thanks
2
Cauchy Sequence in metric space problem
For each positive integer k, define $f_{k}(x)=x^{k}$ for $0 \leq x \leq 1$. Is the sequence $\{ f_{k} : [0,1] \rightarrow R \}$ a Cauchy seq... | 5 | [
0.0751953125,
0.033935546875,
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0.033203125,
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0.01220703125,
-0.0272216796875,
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0.07177734375,
0.0220947265625,
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-0.083984375,
-0.05126953125,
-0.03076171875... | 22,355 | 22355 | |
Tangent of the hyperbola
February 12th 2008, 09:18 AM #1
Member
Joined
Mar 2007
From
England
Posts
104
Tangent of the hyperbola
I'd like some help with this rather difficult question:
The tangents at $\<br /> P(ct_1 ,\frac{c}{{t_1 }})<br /> \$ and $\<br /> Q(ct_2 ,\frac{c}{{t_2 }})<br /> \$ to t... | 5 | [
0.0093994140625,
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0.0830078125,
0.04833984375,
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0.04443359375,
0.1005859375,
-0.0279541015625,
-0.060546875... | 22,356 | 22356 | |
Physics Forums - 2nd order with exponential and constant on right side
2nd order with exponential and constant on right side
Hi everybody,
How do I solve this differential equation ??:
y'' = a(Exp(-b*y)-1) ;
where a, b are constants
with the boundaries conditions :
y'(x=0)=-K1
y'(x=L)=0
without the constant t... | 4 | [
-0.06494140625,
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0.0595703125,
0.056640625,
0.055419921875,
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-0.06689453125,
... | 22,357 | 22357 | |
Patent US5600330 - Device for measuring position and orientation using non-dipole magnet IC fields
BACKGROUND OF THE INVENTION
1. Field Of The Invention
This invention pertains to devices using magnetic fields for measuring the position and orientation of receiving antennae with respect to transmitting antennae.
2. ... | 4 | [
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0.068359375,
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0.026123046875,
0.0013046264648437... | 22,358 | 22358 | |
Math Help
May 3rd 2010, 09:20 AM #1
Newbie
Joined
May 2010
Posts
1
dynamics
*theta=(-)
A particle of mass m moves under an attractive central force mk/r^a where r is the radial distance from the force centre O.
assuming that the radial and transverse components of accleration in polar coordinate... | 5 | [
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0.06494140625,
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0.05517578125,
0.0595703125,
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0.018310546875,
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0.054931640625,
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... | 22,359 | 22359 | |
Another hierarchical model
October 25th 2008, 03:25 AM
approx
Another hierarchical model
Having some trouble with a hierarchical model. Can someone please check my first answer and help me to get on with the b-assignment?
Assume that Y denotes the number of bacteria per cubic centimeter in a particular liqu... | 5 | [
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-0... | 22,360 | 22360 | |
I am to graph the function but i cant find where f''(x) equals zero
October 27th 2012, 10:06 AM #1
Newbie
Joined
Oct 2012
From
Canada
Posts
1
I am to graph the function but i cant find where f''(x) equals zero
f(x)= x^4 - 4x^3 - 8x^2 + 48x
f'(x)= 4 (x-2)(x+2)(x-3)
f''(x)= 4(3x^2 -6x- 4)
... | 4 | [
0.01544189453125,
-0.007080078125,
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0.06103515625,
-0.00390625,
-0.0649414062... | 22,361 | 22361 | |
Need a few logarithm formulas...
May 30th 2009, 03:05 PM
stewardship37
Need a few logarithm formulas...
Or at least I think I do...
These are the two problems I have:
#1: $4^{4x}=2000; x=?$
#2: $4log(x-4)=16; x=?$
...so I basically just need to know what $x$ equals, and just plugging in num... | 4 | [
0.06640625,
0.05224609375,
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0.0... | 22,362 | 22362 | |
Partial Differential Equations questions
May 12th 2010, 09:26 AM #1
Newbie
Joined
May 2010
Posts
1
Hey I have these problems that I'm having trouble with for my PDE class. A complete solution would be nice
1. find u(r,theta) when r is equivalent to sqrt(x(1)^2+x(2)^2) less than or equal to 2
lapl... | 4 | [
-0.06494140625,
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0.00830078125,
-0.01953125,
-0.068359375,
... | 22,363 | 22363 | |
Halp! Linear equation questions.
September 17th 2008, 03:51 PM #1
Newbie
Joined
Sep 2008
Posts
2
I'm supposed to find the y-intercept, slope, and equation for a couple problems. I'm having a lot of trouble with these. This first one has the two points on a graph (0,3) and (6,6) The y
intercept is 3 an... | 4 | [
-0.076171875,
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0.0439453125,
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... | 22,364 | 22364 | |
Surface Area & Volume
From DEP-SSA WiKi
SURFACE AREA & VOLUME OF 3-D OBJECTS
Objective
--At the end of the module learners will be able to explain/tell about
• Vertices's, edges and faces of Cube,Cuboid,Cylinder,Cone,Sphere
• Surface,Surface area and volume of above 3D objects
Overview
Here with the help of ... | 4 | [
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Largest and smallest possible dimension?
Have you given this any thought at all? Do you know the "rank- nullity" theorem: If L:U-> V, then the rank of L (dimension of the image L(U)) plus the nullity of L (dimension of null space of L) is
equal to the dimension of U. Now, what is the dimension of U?
A "5 by 7 matrix" ... | 5 | [
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-0.0... | 22,366 | 22366 | |
need help optimization
December 9th 2006, 03:15 AM
bobby77
need help optimization
Suppose that body temperature 1 hour afer receiving x mg of drug is given by
T(x)=102-(1/6) x^2(1-x/9)
for 0<=x<=6.The absolute value of the derivative,|T'(x)| is defined as sensitivty of the body to the drug dosage.Find th... | 4 | [
0.00457763671875,
0.0167236328125,
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0.1474609375,
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0.00070953369140625,
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0.051025390625,
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0.03369140625,
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-0.0025787353515625,
0.11572265625,
-0.0... | 22,367 | 22367 | |
Graph theory matching size
September 30th 2013, 12:26 PM #1
Member
Joined
Oct 2009
From
United States
Posts
169
Graph theory matching size
Prove that every graph G without isolated vertices has a matching of size at least n(G)/(1+∆(G)). (Hint: Apply induction on e(G)).
I have started this proble... | 5 | [
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0.0296630859375,
0.021728515625,
0.031982421875,
0.00014209747... | 22,368 | 22368 | |
probability
December 31st 2008, 05:41 AM
mathaddict
probability
A and B plays chess everyday . The probability that A beats B in any game is twice the probability that B beats A . The probability that B beats A is three times the probability that the game
ends in a draw . What is the probability that the gam... | 4 | [
0.051025390625,
-0.0478515625,
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-0.09375,
-0.07666015625,
0.051025390625,
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-0.057373046875,
0.03271484375,
0.048583984375,
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-0.08837890625,
0.017578125,
0.00147247314453125,
0.06005859375,
0.057861328125,
-0.0064697265625,
-0.0117187... | 22,369 | 22369 | |
Bayes’ Theorem and prospect valuation
Bayes’ Theorem, named after Thomas Bayes, is a way to determine posterior probabilities after being given a set of prior and conditional probabilities. It has been used before in past baseball
analysis. As shown in the linked article, it is useful to use Bayes’ Theorem to “update” ... | 5 | [
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0.0737304... | 22,370 | 22370 | |
Couple more problems
January 16th 2007, 05:16 PM #1
Junior Member
Joined
Jan 2007
Posts
40
Couple more problems
I have two problems to finish my worksheet and was hoping for some help.
First one is...find the smallest positive angle from the positive x-axis to the vector OP that corresponds to (3,3)... | 4 | [
-0.049560546875,
0.01007080078125,
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0.035400390625,
0.06591796875,... | 22,371 | 22371 | |
Trig Simplification 2
March 29th 2011, 05:55 PM #1
Trig Simplification 2
Hey guys, I had another simplification question. You may start the process from either of these expressions, but the end result must the the other one:
$\displaystyle \frac{cscx}{secx-cscx}$
$\displaystyle \frac{\cot^2x+cscxsecx+1}... | 4 | [
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0.060302734375,
0.0610351... | 22,372 | 22372 | |
Last Problem, I swear
April 14th 2008, 06:21 PM #1
Newbie
Joined
Apr 2008
Posts
9
Last Problem, I swear
Allright, here's the last problem I need help with, thanks to all those that have helped! Solve:
[(3/x^2)+(1/x)]/[2-(4/5x)]
Thanks! You guys rock!
nerd
$\frac{\frac{3}{x^2}+\frac{1}... | 4 | [
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0.0429687... | 22,373 | 22373 | |
Continuous Function on an Interval (Cal 2)
March 28th 2008, 09:05 PM #1
Newbie
Joined
Mar 2008
Posts
4
Continuous Function on an Interval (Cal 2)
Let f(x) be a continuous function defined on the interval [2, infinity) such that
f(4) = 10, |f(x)| < x^{9} + 6
and
∞
INT (f(x) e^(-x/2))dx = ... | 5 | [
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-0.044677734... | 22,374 | 22374 | |
Trigno problem. Expressing values in terms of and showing...
January 22nd 2011, 12:59 AM #1
Junior Member
Joined
Jan 2011
Posts
35
Trigno problem. Expressing values in terms of and showing...
Me again.
Okay, for this question that I'm having difficulty in, here is the figure:
And as we know:
... | 4 | [
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0.0625,
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0.044677734375,
0.027587890625,
0.0306396484375,
-0.05859375,
0.0211181640625,... | 22,375 | 22375 | |
How do you measure the distance between Earth and the Sun?
How do we calculate the distance of the Sun from the Earth, or the actual size of the Sun, or the speed of travel of Earth in its orbit around the Sun? Clearly, from an answer to one of these
questions one can find out the answers to the others. But how do we ... | 4 | [
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-0.0000705718994140625,
... | 22,376 | 22376 | |
Patent US4750190 - Apparatus for using a Leroux-Gueguen algorithm for coding a signal by linear prediction
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for using a Leroux-Gueguen algorithm for coding a signal by linear prediction.
The invention applies to the processing of widely varying ... | 4 | [
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... | 22,377 | 22377 | |
Find formula for sum of square roots
quadraphonics
Well, all the fundamental theorem of calculus says is that definite integrals can be written in terms of antiderivatives, so as long as you don't use that fact, it should be a problem, no? So, as
Dick suggests, set up the problem as an integral, and then evaluate th... | 5 | [
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0.03369140625,
0.038818... | 22,378 | 22378 | |
Jordan form help...
December 6th 2009, 12:55 PM
Majialin
Jordan form help...
I stumbled across this question, and I'm not quite sure how to go about and find the Jordan form of this kind of question. Any help on how to get started?
Let
N be an element of L(P4(C)), defined by N(p(z)) = zp'''(z)+p'(z... | 4 | [
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-0.09033203125,
0.0... | 22,379 | 22379 | |
Complex Number Question
November 16th 2008, 09:14 PM #1
Senior Member
Joined
Feb 2008
Posts
297
Complex Number Question
On an Argand diagram, the points P and Q represent z1 and z2 respectively. OPQ is an equilateral triangle. Show that z1² + z2² = z1z2
Since the sides of an equlateral triangle al... | 4 | [
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-0.0603... | 22,380 | 22380 | |
Comparing Net Present Value and Internal Rate of Return
Executive Summary
• Net present value (NPV) and internal rate of return (IRR) are two very practical discounted cash flow (DCF) calculations used for making capital budgeting decisions.
• NPV and IRR lead to the same decisions with investments that are indep... | 5 | [
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0.000335693359375,
-0.0229... | 22,381 | 22381 | |
I need "factoring" help. And I don't get the Reverse FOIL method.
March 25th 2012, 08:59 PM #1
Newbie
Joined
Mar 2012
From
alabama
Posts
2
I need "factoring" help. And I don't get the Reverse FOIL method.
So I have finally gotten the hang of the ac method, but I have some trouble completing my quiz.
... | 4 | [
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-0.0201416015625,
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0.01806640625,
-0.01348876953125,... | 22,382 | 22382 | |
Comparison & Limit Comparison test for series
March 25th 2009, 09:30 AM #1
Comparison & Limit Comparison test for series
Can someone see if I am doing this the right way? Or if there is an EASIER way to do this?
Determine whether the series converges or diverges.
$\sum^{\infty}_{n=1} \frac{n^2 + 1}{n^2 ... | 5 | [
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-0.004913330078125,
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0.043701171875,
-... | 22,383 | 22383 | |
Bolzano–Weierstrass theorem
I am looking for the most compact proof for the Bolzano–Weierstrass theorem,anybody have any links/ideas. Thanks.
Some statements of this theorem vary. But here is one source.
What do you think of this one? I want to be able to write it out in the shortest time possible. Is there anything ... | 4 | [
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-0.002... | 22,384 | 22384 | |
Development of a Stair-Step Multifrequency Synchronized Excitation Signal for Fast Bioimpedance Spectroscopy
BioMed Research International
Volume 2014 (2014), Article ID 143461, 8 pages
http://dx.doi.org/10.1155/2014/143461
Research Article
Development of a Stair-Step Multifrequency Synchronized Excitation Signal for... | 4 | [
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-0.001876831054... | 22,385 | 22385 | |
Structural Health Monitoring of a Reinforced Concrete Building during the Severe Typhoon Vicente in 2012
The Scientific World Journal
Volume 2013 (2013), Article ID 509350, 12 pages
http://dx.doi.org/10.1155/2013/509350
Research Article
Structural Health Monitoring of a Reinforced Concrete Building during the Severe ... | 4 | [
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... | 22,386 | 22386 | |
Outcome Inelasticity and Outcome Variability in Behaviour-Incidence Models: An Example from an SEIR Infection on a Dynamic Network
Computational and Mathematical Methods in Medicine
Volume 2012 (2012), Article ID 652562, 11 pages
http://dx.doi.org/10.1155/2012/652562
Research Article
Outcome Inelasticity and Outcome ... | 4 | [
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Interesting properties of nested functions
The properties arise from
infinitely
nested functions such as:
[itex]x=\sqrt[n]{x^{n-1}\sqrt[n]{x^{n-1}\sqrt[n]{x^{n-1}\sqrt[n]{x^{n-1}...}}}}[/itex]
You can solve it algebraically to verify that x is equal to the nes... | 4 | [
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0.04150390625,
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0.0247802734375,
-0.087890625,
-0.03686... | 22,388 | 22388 | |
Image Restoration Based on the Hybrid Total-Variation-Type Model
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 376802, 30 pages
http://dx.doi.org/10.1155/2012/376802
Research Article
Image Restoration Based on the Hybrid Total-Variation-Type Model
^1College of Mathematics and Information Science, Hena... | 4 | [
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0.0128... | 22,389 | 22389 | |
[Haskell-cafe] Re: FASTER primes
Daniel Fischer daniel.is.fischer at web.de
Wed Dec 30 19:28:56 EST 2009
Am Mittwoch 30 Dezember 2009 20:46:57 schrieb Will Ness:
> Daniel Fischer <daniel.is.fischer <at> web.de> writes:
> > Am Dienstag 29 Dezember 2009 20:16:59 schrieb Daniel Fischer:
> > > > especially the claim that... | 4 | [
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Scattering from a Small Dielectric Sphere
Next: Scattering from a Small Up: Optical Scattering Previous: Radiation Reaction of a Contents
This is a relatively simple, and hence very standard problem.
Now, we have no desire to ``reinvent the sphere''^14.1 but it is important that you unders... | 4 | [
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Random Walk
November 14th 2009, 06:09 AM #1
Junior Member
Joined
Nov 2009
Posts
57
Random Walk
If w = (w_0, w_1, w_2, ...) is the trajectory of a simple symmetric random walk on Z^3 (e.g. a sequence of vectors), how do you prove that for any eps > 0:
P{||w_n||. n^(eps - 1/6) --> \infty as n --> \inf... | 5 | [
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0.0091552734375,
-0.02697753906... | 22,392 | 22392 | |
Volume integral to a surface integral ... divergence theorem
October 7th 2010, 01:44 PM #1
Newbie
Joined
May 2010
Posts
20
Volume integral to a surface integral ... divergence theorem
Suppose A is a vector satisfying curlA = aA, a a function of position.
Is it possible to turn the volume integral of... | 5 | [
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Contradiction of Galios theory
August 4th 2011, 09:39 PM #1
Newbie
Joined
Jun 2011
Posts
15
Contradiction of Galios theory
Hello.
Galios theory tell us x^5-6x+3 is not solvable by radical but every equation lower than fifth can solve by radical.
If G is solvable and H is solvable too G*H are solv... | 5 | [
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How to Compute the Area of a Triangle
How to Compute the Area of a Triangle: Four Methods
There are many ways to compute the area of a triangle if you know several of its dimensions. You can calculate a triangle's area if you know:
(1) the length of all three sides (SSS)
(2) the length of two sides and the angle betw... | 4 | [
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0.034423828125... | 22,395 | 22395 | |
Do the vectors (1,3,-2),(2,1,1) belong to R(T)?
December 12th 2009, 07:38 PM
Undefdisfigure
Do the vectors (1,3,-2),(2,1,1) belong to R(T)?
Let T:IR^3-->IR^3 be defined by T(a,b,c) = (a+b, b-2c, a + 2c). Do the vectors (1,3,-2), (2,1,1) belong to R(T)?
Looking through my notes I found some clues to this que... | 4 | [
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Relativistic energy and momentum questions.
problems statement:
1. a nucleus of mass m initially at rest absorbs a gamma ray (photon) and is excited to a higher energy state such that its mass now is 1.01m, find the energy of the incoming photon needed to carry
out this excitation.
2. A moving radioactive nucleus of k... | 4 | [
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0.046386718... | 22,397 | 22397 | |
Congruence equations
November 10th 2013, 06:51 AM #1
Newbie
Joined
Jan 2013
From
Pennsylvania
Posts
23
Congruence equations
How do I solve equations of the form
x^k = a mod m (where m is a composite integer, a and m are relatively prime)
without using the Chinese Remainder Theorem?
I k... | 5 | [
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GPU-Accelerated Finite Element Method for Modelling Light Transport in Diffuse Optical Tomography
International Journal of Biomedical Imaging
Volume 2011 (2011), Article ID 403892, 11 pages
http://dx.doi.org/10.1155/2011/403892
Research Article
GPU-Accelerated Finite Element Method for Modelling Light Transport in Di... | 4 | [
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