求复数=dfrac (2i)(1-i)+dfrac (2(1-i))(i)的模与主辐角。

1.求下列复数z的实部与虚部、共轭复数、模与辐角:-|||-(1) 1/(3+2i);-|||-(2) dfrac (1)(i)-dfrac (3i)(1-i)

dfrac (1)(z)-dfrac (3i)(1-i)的共轭复数为 dfrac (1)(z)-dfrac (3i)(1-i) D.以上都不对的共轭复数为D.以

[问答题]若复数z=a/(1-i)+(1-i)/2是纯虚数，则实数a等于________。

1.9 利用复数的三角表示计算下列各式:-|||-(1) (1+i)(1-i) ;-|||-(2) (-2+3i)/(3+2i) ;-|||-(3) ((dfr

若((dfrac {a+i)(1-i))}^2=-1，则a=；A 0 B 2 C 1 D 3若，则a=；A0B2C1D3

求下列各复数的实部、虚部、模与幅角。(1)dfrac (1-2i)(3-4i)-dfrac (2-i)(5i);求下列各复数的实部、虚部、模与幅角。(1);

[单选题]复数z满足(1+i)z=1-i，则|Z|=()。A.√2/2B.√2C.2D.1

已知复数=dfrac (2-2i)(1+sqrt {3)i}，则=dfrac (2-2i)(1+sqrt {3)i}=dfrac (2-2i)(1+sqrt {

18.求 e^1-i(pi)/(2),exp[(1+iπ)/4],3^i和(1+i)^i 的值.18.求 $e^{1-i\frac{\pi}{2}}$,exp[

1.6 求下列复数的模与辐角主值:-|||-(1) sqrt (3)+i;-|||-(2) -1-1;-|||-(3) -i;-|||-(4) -1+31.