Question

設復數z滿足i(z＋1)＝－3＋2i(i為虛數單位)，則z的實部是________．

Answer 1

1

設z=a+bi(a、b為實數)，i(z＋1)=i(a+1+bi)=-b+(a+1)i=-3+2i,
因此b="3,a+1=2," 則z的實部a=1.