Question: Maple cannot solve this integral



I am new to Maple. I am trying to solve a big integral, but I cannot solve it using Maple.


The problem boils down to this integral:

int(exp(x*cos(theta)+y*sin(theta)), theta=0..2*Pi)


The solution of this integral is:

2*Pi*BesselI(0, sqrt(x*x+y*y))


How can I get Maple to solve these integrals?

Please Wait...