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计算:(1)(6-5i)+(3+2i);(2)5i-(2+2i);(3)(23+i)+(1-23i)-(12+34i);(4)(0.5+1.3i)-(1.2+0.7i)+(1-0.4i).
题目详情
计算:
(1)(6-5i)+(3+2i);
(2)5i-(2+2i);
(3)(
+i)+(1-
i)-(
+
i);
(4)(0.5+1.3i)-(1.2+0.7i)+(1-0.4i).
(1)(6-5i)+(3+2i);
(2)5i-(2+2i);
(3)(
2 |
3 |
2 |
3 |
1 |
2 |
3 |
4 |
(4)(0.5+1.3i)-(1.2+0.7i)+(1-0.4i).
▼优质解答
答案和解析
(1)(6-5i)+(3+2i)=9-3i;
(2)5i-(2+2i)=-2+3i;
(3)(
+i)+(1-
i)-(
+
i)=(
+1-
)+(1-
-
)i=
-
i;
(4)(0.5+1.3i)-(1.2+0.7i)+(1-0.4i)=(0.5-1.2+1)+(1.3-0.7-0.4)i=0.3+0.2i.
(2)5i-(2+2i)=-2+3i;
(3)(
2 |
3 |
2 |
3 |
1 |
2 |
3 |
4 |
2 |
3 |
1 |
2 |
2 |
3 |
3 |
4 |
7 |
6 |
5 |
12 |
(4)(0.5+1.3i)-(1.2+0.7i)+(1-0.4i)=(0.5-1.2+1)+(1.3-0.7-0.4)i=0.3+0.2i.
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