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

Feb2313 09:23 AM
micromass

1 
33,258 
Hi All,
I have been trying to unsuccessfully crack a certain problem for my research, but I get stuck. I found it...

Sep1211 03:38 AM
Anna Kaladze

0 
461 
Hey, I'm an Alevel maths student and I was wondering if anybody has any pretty complicated equations that can be...

Sep1111 11:47 PM
micromass

14 
2,470 
I tried to calculate the number of consecutive integers between 10,000 and 99,999 that do not use the number 7. I got...

Sep1111 07:59 PM
starfish99

3 
940 
Actually I changed my mind and feel like it should be ((pi*r)(2*pi*r)) by my faulty thinking.
Since pi*r would give...

Sep1111 07:49 PM
NascentOxygen

17 
2,312 
when do i use
the
Paralleogram Law of Vector Addition
and when
THe Triangle law of vector addition
will...

Sep1111 07:26 AM
piyush3dxyz

6 
5,610 
Hii , this is the thread for simple derivations on geometrical figures.
Here I begin with the easiest proof of the...

Sep1111 04:46 AM
sankalpmittal

0 
805 
I am currently working on computer program that has to find the sum of during looping:
1 + 1/2 + 1/3 + 1/4 + etc.
...

Sep1011 08:24 PM
Nowhere Man

2 
655 
I got this problem from one of my favorite webcomics:
Paradox occurs on a random day during the year such that it is...

Sep1011 07:49 PM
disregardthat

4 
898 
So I have this integration to solve but I needed help and I just couldn't make up a term to call that 'x' ><!! the...

Sep1011 07:46 PM
Nowhere Man

5 
1,411 
Hi,
For my exams, I am provided with a list of trigonometric functions. I do know at least a good half of those I'm...

Sep1011 08:27 AM
AlephZero

3 
1,318 
2, 120 gram bars of soap for $2
or.....
2, 90 gram bars of soap for $1.50
Can someone explain the method to...

Sep1011 02:31 AM
Caramon

8 
925 
Given 2 points on a circle, call them A and B. I know the cartesian coordinates of A. I also know the radius of the...

Sep911 03:31 PM
b1gd0g

2 
2,277 
Hello,
I have the following equation in x and y: xy  \sqrt{(x^2+a^2)(y^2+c^2)} = \frac{1}{a^2}\frac{1}{c^2}...

Sep911 03:29 PM
mathman

1 
813 
Is there any kind of theorem, algorithm on factoring a large number into primes and which I could use (the theorem)...

Sep911 10:29 AM
Gytax

2 
669 
The solution of mathematical tasks in the ancient Greek
Trisection of angles
angle=0°  no solution
180°>angle>0° ...

Sep911 09:04 AM
HallsofIvy

17 
2,783 
how to use a log table..and how to find the value of log 1.6 or log 5.62.
or any other example.

Sep911 09:03 AM
HallsofIvy

2 
3,414 
Given 1000 cows and 10 pens, you want to arrange the cows in the pens such that any number of cows from 1 to 1000 can...

Sep911 06:40 AM
Amergin

3 
1,516 
Hello physicsforums.com,
The last two weeks of my nuclear engineering course covered a mathematical topic known as...

Sep911 12:28 AM
Gabrielwer

3 
2,504 
So I was, in my pure innocense, googling for math word problems. Little did I know I'd only find word problems for...

Sep811 09:51 PM
symbolipoint

6 
2,693 
I am aware that Bessel functions of any order p are zero in the limit where x approaches infinity. From the formula...

Sep811 05:07 PM
Monsterman222

3 
2,953 
I have 2 questions about b and  4ac in the formula...
x = (b +sqrt(b^2  4ac))/(2a)
If you are given 2nd...

Sep811 03:48 PM
Borek

69 
4,187 
i know that line is a one dimension but i cannot understand then why do sometime need two spatial variable to specify...

Sep811 12:55 PM
asad1111

8 
1,307 
1)why is x(t)+x(t) always even??..no matter if x(t) even or odd???
2)when we talk about unit step...

Sep811 10:05 AM
micromass

3 
1,334 
so I've got this equation down to
x*ln(2/x) = 5
Can someone show/point me to a page where I can see how to solve...

Sep711 11:02 PM
uart

3 
1,349 
I'm doing my economics thesis on game theory, and need to solve a system of nonlinear equations (these will be the...

Sep711 07:27 PM
gsal

1 
759 
Hi,
I am working on a Theory of Knowledge Essay and I was thinking how the proof to Fermat's Last Theorem...

Sep711 07:22 PM
SteveL27

3 
1,387 
Hi,
I've this board, like shown in attachment, that has 2 rows. Each rows have 4 places. I'm trying to find a...

Sep711 07:41 AM
xeon123

5 
889 
This is a game with N players where each player secretly picks a number from 0 to 100. The winner is the player who...

Sep611 04:54 PM
Nikitin

4 
1,088 
I am interested in learning math from a historical perspective. Starting with euclid and working myself up to...

Sep611 04:44 PM
superg33k

3 
1,588 
I need to find the solution to the geometric series expansion of the form...
\sumn^2*x^n , for n=0,1,2,...
most...

Sep611 12:10 PM
JSuarez

4 
2,094 
Hi, I really need some help here.. Vectors remind me why I hate geomtery.
problem 1: Prove that UxV2 = U2+V2...

Sep611 11:40 AM
Nikitin

4 
846 
Hi,
Before ask my question, let me explain how this game works.
It exist a board with 9 positions and 9 pieces....

Sep611 10:01 AM
xeon123

6 
1,187 
What happens if you have to take the arccos of a number greater than 1 or less than 1.
I know from a right...

Sep511 03:12 PM
D H

7 
3,600 
Hello, I'm pretty rusty when it comes to rearranging more complex equations and can't seem to remember how to deal...

Sep411 04:10 PM
JB34

9 
1,806 
When they work out your kill to death ratio on the game Call of Duty Black Ops, if they calculate your total kills...

Sep411 03:36 PM
J3N0VA

9 
1,402 
I'm not sure this is the right thread to post my problem :
I'm trying to define a uniform distribution on the...

Sep411 01:01 PM
Barnak

0 
725 
hello,
in the Wikipedia page for Dimensional analysis how do we know that area = "largest edge2 • f (angle1,...

Sep411 07:48 AM
HallsofIvy

1 
1,944 
Hello,
I'm currently trying to convert polar equations to Cartesian equations and viseversa. I noticed an equation...

Sep411 12:29 AM
stallionx

3 
1,234 
Is there a way to calculate the period of a trigonometric series (like the one below) analytically?
...

Sep311 11:59 PM
LCKurtz

3 
1,326 
I am having trouble understanding how the vector equation of a line : (x,y,z) + t(x1,y1,z1) can be used in conjuction...

Sep311 11:39 PM
LCKurtz

1 
878 