题目内容
计算题
(1)∫12(
+
+
)dx
(2)
+(
)2000+
.
(1)∫12(
| 1 | ||
|
| 1 |
| x |
| 1 |
| x2 |
(2)
-2
| ||
1+i2
|
| ||
| 1+i |
| 1+i |
| 3-i |
(本小题满分14分)
(1)
(
+
+
)dx=(2
+lnx-
)
=2
+ln2-
-2-0+1
=2
-
+ln2
(2)
+(
)2000+
=
+[(
)2]1000+
=
+(
) 1000+
原式的值为:
.
(1)
| ∫ | 21 |
| 1 | ||
|
| 1 |
| x |
| 1 |
| x2 |
| x |
| 1 |
| x |
| | | 21 |
=2
| 2 |
| 1 |
| 2 |
=2
| 2 |
| 3 |
| 2 |
(2)
-2
| ||
1+i2
|
| ||
| 1+i |
| 1+i |
| 3-i |
=
(-2
| ||
(1+i2
|
| ||
| 1+i |
| (1+i)(3+i) |
| (3-i)(3+i) |
=
(-2
| ||
i-2
|
| 2 |
| 2i |
| 2+4i |
| 10 |
|
原式的值为:
|
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