3.复数sqrt (2)+2sqrt (2)i的三角表达式（）

2、复数 1-sqrt(3)i的三角表达式是____.2、复数$ 1-\sqrt{3}i$的三角表达式是____.

1.1.19 利用复数的三角表达式或指数表达式证明:-|||-(a) ((-1+i))^7=-8(1+i);-|||-(b) ((1+sqrt {3)i)}^-

复数=dfrac ((sqrt {3)+i)(2-2i)}((sqrt {3)-i)(2+2i)}的三角形式为( )=dfrac ((sqrt {3)+i)(2

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

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

-3sqrt (2) C. -2sqrt (3) D. -1

=2sqrt (2) D. Delta PAC 的面积为 sqrt (3)

(int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

3.求下列函数的微分:-|||-(1) =dfrac (1)(x)+2sqrt (x);-|||-(2) =xsin 2x;-|||-(3) =dfrac (x

3.求下列函数的微分:-|||-(1) =dfrac (1)(x)+2sqrt (x) =-|||-(2) =xsin 2x ;-|||-(3) =dfrac