Hi,

Problem with complex integral.Consider the integral:

with the branch -pi/0<phi<3pi/2 and the idented contour at z=0 and z=1

(circular contour in the upper half plane)

a)show that this integral can be written in terms of the integral:

no problem with this.I have found it.

b)Evaluate the second integral in part a)and fiond the value of the original

integral.

with this last integral I hav a problem.I used the contour z=x(0<x<R) the sectorcircle z=Re^i.phi(0<phi<2pi/3)and the line z=xe^2pî/3(0<x<R).

I can't find the result.

The choosen contour????????????

Can somebody give me a suggestion?????????Thanks