5(4+i)2 |
i(2+i) |
A.51-38i、 | B.51+38i、 | C.1+38i | D.1-38i |
5(4+i)2 |
i(2+i) |
5(16+8i+i2) |
2i+i2 |
5(8i+15) |
-1+2i |
5(8i+15)(-1-2i) |
(-1+2i)(-1-2i) |
5(1-38i) |
5 |
(1-
| ||
(1+i)2 |
A.
| B.-
| C.
| D.-
|
. |
z |
. |
z |
A.直线 | B.圆 | C.椭圆 | D.双曲线 |
|cost| |
|sint| |
4 | 2 |
-1-
| ||
2 |
|cost| |
|sint| |
π |
4 |
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