(2)积分路径的参数方程为 z(t)=t+it2(0≤t≤1)， 于是Rez=t,dz=(1+2ti)dt, Readk =f+2i)dr 1 1+i 2i 2 2 y=2 x 0 1(2) 积分路径的参数方程为 x y o 1+ i 1 i 2 y = x ( ) (0 1), 2 z t = t + it  t  于是 Re z = t, dz = (1 + 2ti)dt, C Re zdz  = + 1 0 t(1 2it)dt 1 0 3 2 3 2 2         = + t t i ; 3 2 2 1 = + i