复数 -31 的辐角主值θ的范围是-|||-dfrac (pi )(2)lt theta lt 0 ()()-|||-A 正确-|||-B 错误

3【单选题】辐角主值的范围是A、,pi ] B 、,pi ] C、 ,pi ] D、,pi ]3【单选题】辐角主值的范围是A、 B

复数-1-sqrt(3)i的模和辐角主值分别是2、(2pi)/(3). A 对 B 错A. 对B. 错

复数-1-sqrt(3)i的模和辐角主值分别是2、(2pi)/(3). A.对 B.错A. 对B. 错

1.复数 1+i 的辐角的主值为 ()-|||-

当theta =dfrac (pi )(3)时，theta =dfrac (pi )(3)______，theta =dfrac (pi )(3)______，

当 theta =dfrac (pi )(3) 时，theta =dfrac (pi )(3)________ ，theta =dfrac (pi )(3)__

当theta =dfrac (pi )(4)时，theta =dfrac (pi )(4)____;当theta =dfrac (pi )(4)时，theta

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.

(int )_(dfrac {pi )(4)}^dfrac (pi {2)}dtheta (int )_(0)^cot theta (r)^2cos theta

[题目]求复数 =-1+sqrt (3i) 的模、辐角主值及-|||-复数的三角形式