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

Feb2313 09:23 AM
micromass

1 
33,179 
Folks,
I am trying to understand the balance of units for this eqn
## \displaystyle \frac{d^2}{dx^2}(E(x)I(x)...

Nov1612 07:39 AM
HallsofIvy

3 
978 
Hi, Saunderson wrote a solution for finding out Euler Bricks, but I can't find something which would show how is his...

Jun2811 11:55 AM
Atran

0 
840 
Hi
Im a bit stuck on the method for Euler Integration. I have the following first order differential equation:
...

May2303 04:31 PM
Jimbo

7 
4,380 
Hi All,
is there any body to give me some help on how I can calculate the Euler Lagrangian equation associated with...

Jun911 10:59 AM
WannabeNewton

1 
1,131 
Hello,
I am getting very confused.
I have a list of supernovae with galactic coordinates l (from 0>360) and b (from...

Oct109 04:32 AM
birdhen

0 
850 
I have a number of objects (points) in a 3D space. I need to rotate this space using euler angles (or equivilent) and...

Nov807 07:01 AM
D H

6 
4,152 
This may be a stupid question, but I do not understand why the Euler sum is infinite for zeta=1. Why is...

May2407 11:07 PM
robert Ihnot

5 
2,640 
What is most motivating way of introducing this function? Does it in itself have any real life applications that have...

Oct2713 03:58 AM
rcgldr

3 
480 
Let be the taylor series with general coefficient
a(n)=(1)**nb(n) whit b(n) a function of n
then could the...

Apr303 11:56 AM
eljose79

0 
3,551 
In Mathematics a little substitution can work wonders. I'm going to show you how to solve a 150 year old riddle by...

May1803 04:23 PM
Brad_Ad23

6 
5,450 
So Euler derived the analytic expression for the even integers of the Riemann Zeta Function. I was wondering if there...

Jun1112 01:43 PM
Levex

2 
1,611 
The first time I saw Euler's equation, it blew my mind.
e^{i\pi}+1 \equal 0
Here, we have three of the most...

Nov2906 06:57 AM
HallsofIvy

60 
19,581 
I just started studying complex numbers. It says complex numbers in polar form can be expressed as a power of e:
...

Dec2503 01:48 AM
phoenixthoth

10 
3,401 
Is there a clean exponential formula for inverse trig functions (arcsine, arccosine) like there is for sine and cosine?

Oct2308 02:22 PM
Ben Niehoff

3 
4,081 
If e^iPi/2=i, what does e^iPi/2 equal? And could you please write it out in cos + sin notation? For some reason I...

Nov1012 09:36 PM
DiracPool

3 
774 
One can look into any precalculus book and find a proof of the addition formulas of sine and cosine. Though as most...

Dec1108 04:13 PM
matticus

3 
3,990 
Hello. Please tell me how do I derive:
cos(θ)=1/2 (e^{iθ}+e^{iθ})
from:
e^{iθ}=cos(θ) + isin(θ)
as well...

May2913 03:46 AM
pwsnafu

2 
451 
Can Euler's line be parallel to any of a triangle's sides? I'm sure it can, but when is it and how could I prove this?

Mar506 01:36 PM
NanakiXIII

24 
3,601 
When solving the initial value problem y ' = 2yx, y(11)=6 using Eulers method with h=0.2, y0=?
I know how to solve...

Mar3108 05:24 PM
Mitchtwitchita

2 
2,067 
I'm doing a project on the nine point circle and i need to know what type of triangle it works with. I tried...

Nov1903 04:31 PM
selfAdjoint

2 
2,874 
From what I had read, Euler had originally proved the infinitude of primes through proving his product formula and...

Apr1611 04:08 PM
camilus

9 
3,496 
Can someone find a good explanation of how Euler did it? I can't seem to find anything article or whatnot that...

May610 09:10 PM
Count Iblis

1 
2,219 
I need some help/hints on how to prove this statement. I don't know where to start!
Prove that if m and n are...

Feb110 05:39 PM
JSuarez

1 
1,717 
Hi all
I have a question concerning Euler's triangle formula, where the distance (d) between the incenter and...

Jun710 02:27 PM
mathius1

2 
1,547 
One of the great mathematicians in history was born on this day, three hundred years ago. Stefan from Backreaction has...

Apr1607 10:57 PM
Gib Z

1 
1,176 
http://upload.wikimedia.org/math/d/c/4/dc4d000103c1293c5cde00fac04850d6.png
Is this true:
...

May1509 05:57 PM
Tibarn

11 
1,225 
Hi guys,
I encountered it many times while reading some paper and textbook, most of them just quote the final...

Oct2012 02:54 AM
mjka

0 
696 
I would need to evaluate the integral
\int\limits_{x\in S}^TA\exp\left(\frac{1}{4}^TB\right)dx
where
x is a...

Mar809 07:13 AM
bpet

3 
2,067 
As a kid, I remember my father saying "there's a small chance that an electron in your body is on the moon" Well,...

Jun609 06:34 PM
flatmaster

5 
2,072 
How might one comprehend the product of complex numbers
N
(an+ibn)=C
n=1
such as by representation with...

Oct2603 09:43 PM
Loren Booda

4 
972 
Hello, using octave when I evaluate this expression (1+1/x)*xx, with x = 10^(15) i get as result 1.125, I didn't...

Nov413 06:22 AM
voko

2 
495 
How to you evaluate the expression for e (the limit) ? I don't see how you could do this unless you do it numerically...

Jun1006 09:42 PM
lurflurf

10 
2,839 
I'm trying to differentiate e^x from first principles but I can't find a way to manipulate this expression...

Jul2512 10:18 PM
autodidude

8 
3,260 
Just like it is possible to show that e^\pi > \pi^e, is it possible to show that
\sqrt{2}^{\sqrt{2}} >...

Jun2609 06:56 PM
mathman

1 
746 
Let be the function
f(t)=L(1)1/(exp(s)1) where L(1) means the laplace inverse transform..my doubt is to know...

Sep2403 10:13 AM
Tom Mattson

1 
1,585 
Hello guys ,I need help on the following which I encountered during reading the book "i:The imaginary tale".
The...

Jul1706 12:08 PM
AlbertEinstein

4 
1,605 
I am new to this site and would like to find some equations for water evaporation? I would like to understand more...

Oct2909 08:06 PM
HallsofIvy

1 
911 
My prof said "every function is the sum of an even and an odd function, explain."
ive spent about 2 hours off and...

Sep1406 05:26 AM
HallsofIvy

9 
5,795 
(8^2003+6^2003)/49=?
Who can solve this?

Jan805 01:23 PM
Gokul43201

6 
1,988 
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 
1,328 