**How to solve simulate/ solve difference equation in Matlab?**How can I simulate or solve this kind of difference equation?
x(k+2)-7x(k+1)+12x(k)=0
A for loop would work nicely. This particular system is unstable.
-James
Tama Tomi wrote:
> How can I simulate or solve this kind of difference equation?
>
> x(k+2)-7x(k+1)+12x(k)=0
Can you give me a example?
James Allison <james.allison@mathworks.com> wrote in message <hmr9fp$62s$1@fred.mathworks.com>...
> A for loop would work nicely. This particular system is unstable.
>
> -James
>
> Tama Tomi wrote:
> > How can I simulate or solve this kind of...

**Can Matlab solve a system of equations contain one pde(1-D) equation and 3 ode equations by the pdepe solver?**I have a system of equations contains one one-dimensional pde and
three ode. Can it be solved by the 'pdepe' solver?
If it can,how do I treat the boundary function of odes?
...

**Matlab program to solve wave equation up to linear system of equations**New in matlab, Need help please in making a matlab program to solve the wave equation below up to the point when you obtain a system of equations.
solve the wave equation below up to the system of equation using Finite difference method
utt = c^2 uxx, ut(x,0) = 3sin((pi x)/9) , u(x,0) = 0, U(0,t) = U(4,t) = 0,
hx = 1, ht = 0.5, c = 2, nx = 4, nt = 2
nx, hx are number and size of x panels
nt, ht are number and size of t panels
I am using the Finite difference scheme below
u(i,j+1) = c^2*(ht/hx)^2 *(u(i+1,j) + u(i-1,j)) - u(i,j-1) + 2*(1 - c^2*(ht/hx)^2 )*u(i,j)
"Kayanja Andy...

**Solving Coupled Equations of the form Nonlinear Schrodinger Equation using Matlab**I'm doing a fourth year project...Im just starting out and was
wondering if anyone would have any suggestions on where to start for
this topic....
Melissa wrote:
>
>
> I'm doing a fourth year project...Im just starting out and was
> wondering if anyone would have any suggestions on where to start
> for
> this topic....
Hi
GP Agrawal 's book on NL fiber is good start..
Dr. Abhay Kumar
>
>
4 years?
I had to solve this problem in 6 months....
(NLSE + a constitutive equation which correlates the optical field to
another physical quantity present in NL...

**solving an equation in matlab**Hi, I wanted to know if there were any inbuilt commands in matlab to
solve the equation of the form f(x)=0 numerically. The function f(x)
is composed of user written functions. I would really appreciate any
help of this as I need it for some urgent work.
Thanks.
In article <ef26062.-1@webx.raydaftYaTP>, "Apoorva Shende" <apoorvashende@indiatimes.com> wrote:
> Hi, I wanted to know if there were any inbuilt commands in matlab to
> solve the equation of the form f(x)=0 numerically. The function f(x)
> is composed of user written functions. I would really apprecia...

**how to solve equations with matlab**Hi guys
I want to solve this kind of equation:
a*x + b*y = A (1)
a1*x^2 + b1*y^2 = B (2)
Thanks in advanced
Zhong
zhang skrev 2010-01-02 02:17:
> Hi guys
>
> I want to solve this kind of equation:
>
> a*x + b*y = A (1)
> a1*x^2 + b1*y^2 = B (2)
>
> Thanks in advanced
>
> Zhong
See for example:
http://www.mathworks.com/support/solutions/en/data/1-15NRJ/index.html
On Jan 1, 8:17=A0pm, "zhang " <xiao...@gmail.com> wrote:
> Hi guys
>
> I want to solve this kind of equation:
>
> a*x + b...

**how solving equation by matlab**hi
how can i use matlab to solve equations
with my best wishs
mido wrote:
> hi
> how can i use matlab to solve equations
> with my best wishs
This question needs to be refined a bit.
Do you want to solve simultaneous systmes of linear equations?
Do you want to solve differential equations?
Do you want solve an equations by finding the zeros?
Those are just the first few possibilities that come to mind. If I
spent a little more time, I'm sure I could come up with another
half-dozen (or more) possibilities.
That said, I would *strongly* urge you to read the "Getting ...

**solving differential equation**Hi,
I need some help with this problem:
Equation:
A(d^2 U)/(dx^2 )+BU+CG(x,y)=0
Parameters:
A,B,C - known scalars, U(x,y) is a function (2D matrix), G(x,y) is a known 2D matrix.
Surface:
rectangle: x axis: [0,300]. y axis: [0,1000].
Boundary conditions:
Side 1 (x=0): dU/dx=0.
Side 2 (y=1000) and side 4 (y=0): U(x,0)=U(x,1000).
Side 3 (x=300): U(300,y)=0.
I can solve this equation analytically, but I would like to solve it with the finite elements method in order to be able to do it on different surfaces.
Thanks,
Yossi
> Hi,
>
> I need some help with this problem:
> Equation:...

**equations system solving with matlab**Hi everyone. I have solved my last problem but I have a new one. I
try to solve a system of differential equations. After writing it
down and run it I write on the command window the following:
[z,y]=ode45(@sistema1,[0 2],[0 1 20 175.5 5.304 0.08 0.221])
My problem is that even though I write this initial values, matlab
takes zero for the initial value of all the variables.
Thank you for your help.
...