习题课 例6已知解析函数的实部u(x,y)=y3-3xy,且 (0,求其虚部x u =-6xy -6y+3x2-3y2 Ex Bu 3i(x+y)2=3iz2 =3y2-3x2 ay 1 f(2)=iz3+c f(1)=ite-0 =y3-3x2y+ix3-3y2）+c V(xy)=x-32 lexu@mail.xidian.edu.cnlexu@mail.xidian.edu.cn