Double integration with inner integration contains variables

I am trying to do the numerical integration with two integrals. the limits of the inner integration contains the variables that will be integrated out in the next integration. For example, I am integrating the following

int^{inf}_{0}(int^{y+1}_{y-1}(x)dx)dy

How can I enter this in MATLAB

Thanks in advance!

Answer 1

[Torsten]

syms x y
firstint=int(x,x,y-1,y+1);
answer=int(firstint,y,0,Inf)

Best wishes

Torsten.