MATLAB: How to solve integral in matlab

integration

 Dear all 
Can anyone help me to solve the following integral by using definite integration function i.e int(f,x) in matlab

I am looking forward to your help

With best wishes

zahid khan

syms x
value=int(1/sqrt(2*Pi)*exp(-x^2/2),x,-Inf,Inf)

Best wishes

Torsten.

a=...;
L=...;
fun=@(x,y)(0.5*x.^3+x.^2).*exp(-x/a).*(0.5*y.^3+y.^2);
upper_y=@(x)x;
q=integral2(fun,0,L,0,upper_y);

Best wishes

Torsten.

The Symbolic Toolbox does

syms x;
f = x^2
int(f,x)