I am using 'idsolver' to solve a integro-differential equation. But having the problem when run the program "Undefined function or variable 'idsolver' ". How can I solve this problem?

xinterval= [0 6]; 
n=1; 
Initcond =0; 
c= @(x,y) x*(1+x^0.5)*exp(-x); 
d= @(x) 1; 
k =@(x) x; 
alpha =@(x) x; 
beta = @(x) 2; 
Tol = 1e-8; 
Flag =0; 
idsolver(xinterval, n ,Initcond, c,d,k,alpha,beta,Tol,Flag)

[Stephan]

Did you download idsolver and copy it into your Matlab path?

What is the result of

which idsolver

[Md Abu Helal]

I didn't. Could you please tell me briefly, how to do that? Thank you for your help.

Answer 1

[Stephan]

https://de.mathworks.com/matlabcentral/answers/95224-can-matlab-solve-integro-differential-equations

In the comments to this answer is a link to download idsolver.

Since this is not a Part of Matlab Release you have to download and copy the files to one of your Matlab path by yourself.

Then it can be used.

Best regards

Stephan