Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:23 AM
micromass

1 
33,266 
Hello all,
Assume we have an optimization problem and that strong duality holds. Will it also hold for another...

Jul1712 01:12 PM
lementin

4 
593 
Hi, I am trying to learn strong induction, but I am a bit uncertain in some things about it.
In my book, it says...

Nov2607 10:14 AM
disregardthat

4 
7,513 
I understand weak induction but I'm confused on strong induction. Can someone give me a simple example where you would...

Jun2910 06:38 AM
disregardthat

4 
6,696 
Hi
I was playing around with ways to store numbers more compactly in bases other than 2 and, just for giggles, I...

Jun1007 10:25 AM
X=7

5 
2,819 
Hello all,
I am reading an article and there is something I find odd. The setting is a Banach space E and we have...

Aug1409 05:15 PM
quasar987

2 
999 
Hey,
I am trying to find a way to isolate the variable Tc in the following equation:
ln p(t) = A + (B(Tc  T)^m)...

Sep809 02:12 PM
arildno

1 
1,300 
Hi. We are learning about Laplace transforms at uni and I must say that this is a real pain. I have one questions...

Oct3113 08:29 AM
UltrafastPED

3 
474 
Hello Physicsforum,
I am trying to compute the following double sum:
...

Feb512 04:51 PM
HallsofIvy

2 
891 
:uhh: I can normally do combinations and permutations, but these two currently stump me. Any help is appreciated. ...

May2205 09:04 AM
Apophis

3 
921 
I've been trying to invent a formula for solving certain sides and angels on objects... and I've tried many different...

Dec1106 07:47 PM
Dr Game

6 
1,099 
Hello everyone
I have a question thus:
Prove
lim x > 0 x^3/e^(x^3) 1 = 1
I have tried to tackle...

Aug1109 02:08 PM
Elucidus

7 
840 
Hi folks, I am working through a section on the classical limit of the relativistic doppler shift, but I am stuck on...

Nov2112 09:24 AM
ck99

3 
627 
Hi,
It seems I've forgotten more of my algebra than I thought. I am putting together a spreadsheet to help a few...

Jan1911 08:36 PM
yuiop

5 
845 
All,
Hey, it's been a while since I've posted, but I have a problem that I am having a hard time moving forward...

Jan508 12:13 PM
Jeff Cook

9 
1,465 
Could some plz help me with this question, really stuck on it! thanks! :wink:

Apr2205 10:28 AM
uart

8 
836 
Hey all,
I need some help rearranging for R.
O=R{1Cos(28.65S/R)}
For those curious, its a Horizontal Sightline...

Jan512 07:46 PM
Mentallic

4 
1,102 
Suppose you are building a sequence consisting of 0 and 1 in such a way that:
 you start with 1
 no consecutive 0s...

Dec711 02:53 AM
willem2

2 
1,070 
Hello. I am stuck with linear difference equations and i would like some help.
I was given that y(k) =...

Mar1107 11:43 PM
cshum00

5 
1,336 
The eigenvalues of the matrix \left(\begin{array}{cc}0 & \frac{1}{2}\\ \frac{1}{2} & 0\end{array}\right) are ...

Apr605 11:49 PM
Data

9 
901 
The eigenvalues of the matrix \left(\begin{array}{cc}0 & \frac{1}{2}\\\frac{1}{2} & 0\end{array}\right) are ...

Apr605 10:29 PM
Hurkyl

1 
966 
A dutch student from Eindhoven, G. Uytdewilligen, solved an ancient mathematical problem: after two years of...

Sep1104 11:51 PM
Orion1

30 
6,243 
How much study (maths) do you guys do on average?
What motivates you?
Your thoughts. :yuck:
:confused:

Jul1504 11:45 AM
capslock

19 
3,451 
Hello everyone! This is my first post here, though I've been a silent observer in PF for a long time.
I'm planning...

Dec2713 10:13 AM
EJChoi

4 
1,001 
Hi dear all
I am an engineer with usual Engineering mathematics sequence in my college and wants to build good...

Sep2706 07:35 PM
nlmechanics

0 
1,477 
Has anyone in here Studied the theory of Order and Chaos? If so, Can you tell me of any good books that addresses this...

May1404 09:18 PM
Vance

1 
1,202 
Hello people!
I'm studying about collineation. It seems to be simple, but I can't understand so much and I can't find...

Mar2714 08:43 PM
Simon Bridge

1 
315 
I was wondering, since recently I've been studying differential calculus on my own, how to memorize all this? I dont...

Nov3007 10:24 PM
mathwonk

7 
1,415 
The following integral came up in as part of solving a linear 1st order ODE and it's stumped me.
\int \frac{ x \log...

Mar1306 08:24 AM
uart

10 
1,223 
I want to find three integers, a b and c, with a^3 + b^3 = 17 * c^3.
all each the smallest integer possible

Jun1505 09:26 AM
matt grime

13 
1,004 
Here is the fraction that I don't know how to combine and simplify, please help me out! Thanks! =]
\frac{5}{a} +...

Jan1607 07:23 PM
cristo

4 
1,348 
The quadratic equation x^2 + mx + n = 0 has roots that are twice those of x^2 + px + m = 0, and none of m, n, p is...

Apr1005 11:20 PM
lvlastermind

6 
1,105 
You have 10 days of numbers that are averaged together (10 day avg). The most recent 3 days of numbers also averaged...

Aug508 05:20 PM
AD1985

2 
1,274 
How do I solve the following equation?
8n^2 = 64 n lg(n); (0 < n)
n = 8lg(n)
10^n = 10^8 n
...??? How do I...

Dec2404 03:43 PM
Niels

4 
2,992 
K = \frac{f_F}{1f_F}
OK, I feel like the stupidest person ever, but if I know K, how do I find fF?
I even know...

Jan504 10:04 AM
uart

7 
1,244 
If f(x) = square root of x and g(x) = x + 1, then:
1. What is f+g(x)?
2. Domain of f+g(x)?
3. What is f(g(x))?...

Jan2304 09:38 PM
Caldus

4 
857 
For exmaple you can represent one third more accurately with fractions (1/3) than with decimals (.33 etc etc). So why...

May1103 06:35 AM
FZ+

2 
1,018 
I am confused ,whats wrong with the reasoning below ?
http://i1091.photobucket.com/albums/i391/lf47/Untitled.png...

May511 06:37 PM
Jamma

33 
3,038 
I know that there is a theorem to calculate the coefficients for a multinomial expansion, but I'm having a hard time...

May2109 10:10 AM
AiRAVATA

3 
2,333 
Like the title says... I should be way past this (in ODEs+Lin. Algebra). I'm just really tired, have a final tomorrow,...

May411 08:56 AM
Ryumast3r

5 
1,061 
http://imageshack.us/photo/myimages/809/equationu.png/
I'm not understand this simple step.
Btw, this...

Oct1911 12:21 AM
Char. Limit

1 
571 