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

Feb2313 09:23 AM
micromass

1 
38,210 
I found S(4,5,15) do not exist. some one had found?
Donald L. Kreher and Stanis raw p. radziszowski have an algorlthm...

Jul1609 07:34 AM
zansan

0 
555 
I am trying to solve a reallife design issue involving balance points. It's been a very long time since I've taken...

Jul1609 06:22 AM
HallsofIvy

2 
2,996 
I think I actually saw this question on here before but cant find it, hopefully someone can help me. We know x=2 for...

Jul1609 03:52 AM
Alewhey

7 
1,082 
Dear All,
following up on my previous posting "The Riemann Hypothesis for High School Students" here are some further...

Jul1509 06:59 AM
Luca

0 
1,270 
I was trying to visualize/understand what y=(1)x would look like since my graphing calculator won't graph it because...

Jul1509 03:21 AM
TacTics

12 
1,204 
Since prime colors cannot be created by any combination of any other colors, and since composite colors are...

Jul1509 02:50 AM
Enjoicube

6 
990 
I am doing a calculation involving taking three or more temperature measurements and then plotting them against...

Jul1409 07:38 PM
refrigerator

2 
2,574 
Hello,
What negative derivative means like this one:
\frac{\partial^{1}}{\partial\,x^{1}}
Regards

Jul1409 02:12 PM
Enjoicube

2 
2,672 
Suppose a physical quantity needs to be represented in pictorial form...for example distance.
Such value represented...

Jul1409 02:12 AM
AUMathTutor

9 
869 
What I mean is, I have read how many equations that model physical phenomena often aren't directly solvable. Instead...

Jul1409 12:54 AM
Phrak

6 
1,654 
and things become much simpler... :smile:

Jul1309 05:05 PM
Dragonfall

21 
3,840 
im trying to do the Euler problem #14  to determine which starting value under one million produces the longest chain...

Jul1309 04:25 PM
Mensanator

9 
1,948 
like for any algorithm?
On wikipedia it lists for multiplication it's O(n^2)
but some of them have decimals like...

Jul1309 09:26 AM
Dragonfall

1 
778 
I was doing some research on game theory and Kuhn Poker, and I read that Player 1 (the player that bet/check first)...

Jul1209 05:59 PM
jonathan102

0 
1,854 
Struggling to put a number through this as I keep getting my original number as the encrypted number too.
A = 11
p...

Jul1209 03:41 PM
HallsofIvy

7 
996 
Hallo,
When i regard complex function,
Why does the transformation w=zn don't "conserve" angels when
z go to...

Jul1209 11:11 AM
Office_Shredder

1 
713 
I have just begun studying differentiaition and I was getting confused with how to differentiate a function of x in...

Jul1209 06:28 AM
pbandjay

4 
1,454 
The general quadratic equation:
Ax2 + Bxy + Cy2 + Dx + Ey + F = 0
How is this derived? How does the...

Jul1109 10:29 PM
symbolipoint

8 
3,509 
I'm interested in getting a better answer to showing/proving a graph is a function than the usual "horizontal line...

Jul1109 09:23 PM
Mentallic

4 
985 
I am doing a qualification which requires me to chooses a subject for which I will research & produce a presentation &...

Jul1109 02:51 PM
mgb_phys

12 
1,430 
Hello,
I have a question regarding fft's. My experience with working with fourier transforms is pretty much limited...

Jul1109 01:36 PM
eric hardin

3 
3,658 
My proff mentioned something about proportionality:
"To make an a proportionality into an equality, we must introduce...

Jul1109 11:49 AM
Hootenanny

1 
747 
Hi, I'm looking for the formula to get the velocity value from a drag value. I found plenty of resources to do it the...

Jul1109 05:57 AM
HallsofIvy

4 
1,257 
Say I have a monic polynomial,
x^3 + ax^2 + bx + c
with a=2.372282, b=1.862273, c=0.483023
The discriminant...

Jul1009 07:56 PM
junglebeast

2 
1,288 
I have done some research and it seems like the option to add axes to VectorFieldPlot isn't available in my 6.0.0...

Jul909 09:01 PM
zeebo17

0 
902 
Just had a simple question. but jus wanted to know if it had a simple answer...
Is there any way to know if a given...

Jul909 06:44 PM
mathman

3 
1,313 
Yeah i wanna learn some mathematical physics, since i cant just jump from my classes to that different section yet,...

Jul909 03:33 PM
daniel_i_l

6 
1,167 
Suppose you pick a random integer n. If it is even, divide the number by 2, if it is odd, multiply it by three and add...

Jul909 12:23 PM
CRGreathouse

8 
3,644 
I am trying to compute the following,
\prod_{j=0}^{N1}\left
where \hat{I}, \hat{M(j)} are matrices. My problem...

Jul909 12:14 PM
jeffreydk

4 
4,993 
\lim_{x\rightarrowy}\frac{sin{x}sin{y}}{xy}
so this is the question.
I'm here solving this problem you please...

Jul909 06:26 AM
tinytim

4 
802 
1)We know this limit doesn't
\lim_{x\rightarrow\frac{2}{3}}\frac{2}{2+3x} exists
after substituting the value ot...

Jul909 06:19 AM
tinytim

1 
683 
Hello,
correct me if I am wrong, but as far as I know if 2 functions f(x) and g(x) are periodic with Tf and Tg...

Jul809 02:42 PM
arildno

1 
622 
I'm reading a paper on tissue cell rheology ("Viscoelasticity of the human red blood cell") that models the creep...

Jul809 11:50 AM
Mapes

2 
2,274 
I don't trust myself for reading this alone. Is this valid?
...

Jul709 11:17 PM
CRGreathouse

3 
896 
Hi ,
A friend sent me this website, and I was wondering how it worked,
...

Jul709 09:14 PM
Smile101

5 
2,617 
Hi, I am pursuing graduate studies in economics, and I hear that "measure theory" is one of the classes that will...

Jul709 07:30 PM
Dragonfall

17 
3,075 
I'm whacked outta solving these problems just hanging around for more than 2 hours for each question but can't solve...

Jul709 07:05 PM
slider142

9 
1,046 
I have found alot of information about how to solve and graph parametric equations, but what I want to know is, what...

Jul709 01:49 PM
hotvette

3 
873 
Need information about GRE subjective mathematics. can any one help me in this regard

Jul709 08:46 AM
HallsofIvy

2 
643 
How do I understand them and what they do? I've memorized "sohcahtoa", but I still don't get what is the point of...

Jul709 02:22 AM
Borek

7 
905 