(10 points) Evaluate the following integrals (a)
\int_(|z-1|=1) (z)/(z^(2)-1)dz
(b)
\int_(|z|=2) (ze^(z))/((z-1)^(3))dz
(c)
\int_(|z|=1) (zsin(z)+e^(z)+z^(2))/((z-2)^(3))dz
