My intent is to create a thread for people interested in Differential Equations. However, I will explicitly state that...

Jul312 07:18 PM
Luccas

95 
121,414 
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:24 AM
micromass

1 
25,904 
Hi guys!
im getting stuck in solving the following Linear Partial Differential Equation:
2p+3q=x+y+1
now...

Sep1406 04:57 AM
kosovtsov

1 
6,001 
Ok, so I am dealing with a critically damped oscillator in which the natural frequency(w) of the oscillator is equal...

Feb304 07:05 AM
himanshu121

2 
5,989 
Hello! I got one question for you.
How come that (f \circ g)'(x) = f'(g(x)) g'(x) ?
Since (f \circ...

Aug1011 12:25 AM
dimension10

11 
5,987 
Hi
Can any one please help me to solve the quasilinear partial differential equation:
...

Jan1408 06:20 PM
rezwan

0 
5,966 
How do i find the inverse laplace transform of s/(s2)^2

Jul2107 03:07 PM
EugP

2 
5,951 
How to use power series to solve this nonlinear differential equation?

Aug1108 09:47 AM
Matthew Rodman

3 
5,914 
In my research, I'm using a modified version of the wave equation:
\
I would like to take this PDE,...

Apr1909 06:44 PM
nkinar

3 
5,911 
Hi everyone, I need some help solving a bessel function of the 1st order. The equation is used to calculate the mutual...

May1009 09:33 AM
nada

5 
5,904 
Hi everyone...
I need to solve the differential equations of a RC circuit given a voltage and a current pulse. I...

Jul310 01:17 PM
jasonRF

3 
5,902 
Hello
i have a question :
dx/dt=(a*x)+(b*y)+(c*z)
dy/dt=(d*x)+(e*y)+(f*z)
dz/dt=(g*x)+(h*y)+(i*z)

Oct1505 05:26 AM
saltydog

17 
5,886 
Hey,
I have no idea where to start, for this question. I know that I will probably have to use vector and scalar...

Jun2105 02:53 PM
mustafa

2 
5,882 
http://img258.imageshack.us/img258/3518/01ck5.png
I would like to build a logistic differential equation for US oil...

Feb1908 03:18 PM
coomast

5 
5,878 
I feel so embarrased asking this question, but this is the place to get answers.
I have a 2nd order ODE with a...

Jan2905 11:12 AM
saltydog

4 
5,872 
Hi, I am solving a second order ODE. the result I got is an exponential to the power of a real and an imaginary part,...

May1105 03:48 PM
dextercioby

7 
5,870 
I am reading a text about Laplace transform in solving differential equations. Seems that this method is so powerful....

Jun1109 12:42 PM
Mute

4 
5,865 
To calculate a p.d.f. of a r.v., I need to integral a product of two bessel function as
\mathcal{L}^{1} \left(...

Jul2908 12:13 AM
birisi11

1 
5,864 
How i can solve a system of 6 first order differential equations by using numerical techniques like Euler method,...

Jul105 11:27 AM
saltydog

2 
5,849 
1.Use implicit differentiation to find the equation of the tangent line to the curve
xy^3+xy=16 at the point (8,1) ....

Oct2207 11:39 PM
rocomath

1 
5,846 
I am having trouble with some of my homework. I am not quite sure how to find the damping ratio from a third order...

Sep711 11:42 PM
twillkickers

0 
5,843 
Hi All,
I have a differntial equation that I came up with on a little engineering problem posted here...

Aug2306 07:43 PM
HallsofIvy

4 
5,809 
Well, i realy i am pissed at the moment because of this. I have been trying to figure out if there is a...

Sep2410 02:27 AM
notpigfly

16 
5,802 
Hi all.
Can someone briefly explain the difference between finite difference methods and spectral methods? What are...

Jan1008 05:08 AM
mda

1 
5,798 
Hi!
I have a serious problem solving the following system of differential equations:
...

Nov2404 07:01 PM
Dr Transport

7 
5,796 
can anyone give me the most simple for someone with little diffrential equations back ground, on the proof for where...

Oct1004 05:36 PM
leoflc

7 
5,767 
Hi,
I'm trying to find an analytical solution of Laplace's equation:
\phi_{xx} + \phi_{tt} = 0
with the...

Dec807 06:37 PM
coomast

4 
5,757 
guys please help me, i'm trying to solve a simple moving PDE equation in matlab.
The equation i'm trying to solve is...

Feb1810 09:40 PM
kribosgiros

5 
5,744 
I'm stuck on what to do here. The question reads Consider a population P(t) satisfying the logistic equation dP/dt =...

Apr809 06:25 PM
doubedylan

4 
5,739 
Hi, I am currently taking a class which is now covering PDE's and I think I need more sample or example problems that...

Nov1406 09:35 AM
Einstein Mcfly

2 
5,732 
I am sure most of you are familiar with the equation: m(x)''+c(x)'+k(x) = 0. Then, we create an auxillary equation...

Oct607 12:37 PM
HallsofIvy

2 
5,718 
For a second order linear differential homogeneous equation, if the two solution y1 and y2 is a multiple of one...

Feb1009 09:54 PM
Emreth

4 
5,706 
Can anyone tell me in which reallife situations are the CauchyEuler equations present??? :confused:

Dec605 01:27 AM
Clausius2

5 
5,675 
i cant seem to figure this out...
if the differential equation dy/dx= y2y^2 has a solution curve y=f(x)...

Apr807 06:31 PM
Data

3 
5,630 
Hello,
I have a Jacobian matrix
A = \left( \begin{array}{cc}
2x+1a_{1}y & a_{1}x \\
a_{2}ry &...

Mar3009 05:22 PM
Somefantastik

0 
5,619 
why does the general solution to the eulercauchy equation only work for x>0?

Oct1805 07:41 AM
asdf1

2 
5,602 
i have been told that dA=R dR d(theta), what does mean exactly in terms of pi. the shape is a semicircle. Does this...

Sep1805 06:51 PM
HallsofIvy

17 
5,600 
I have 15 equations with 15 unknowns describing a dynamic process. I would like to know how I can conbine solving...

Mar808 11:29 PM
John Creighto

5 
5,598 
Hi all,
I have another post on here relating to Fick's law of diffusion, but before I asked that I really should...

Jan2908 03:36 AM
gareth

2 
5,581 
Hi
I have to solve this equation using laplace transform
ty''+(t1)y'+y=t^2 y(0)=0 y'(0)=0
I tried it...

Jun1005 11:25 AM
arildno

29 
5,578 
Everybody knows one dimensional wave equation \frac{\partial^2u}{\partial t^2} = c^2 \frac{\partial^2u}{\partial x^2}...

Apr2710 09:06 AM
Hootenanny

1 
5,577 
I need help to solve this coursework:
MATLAB PROGRAMMING COURSEWORK
OBJECTIVES:
Learn to solve engineering...

Dec911 04:41 PM
losky88

5 
5,568 