【考研类试卷】考研数学三(不定积分)模拟试卷2及答案解析.doc

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1、考研数学三(不定积分)模拟试卷 2 及答案解析(总分:58.00,做题时间:90 分钟)一、填空题(总题数:7,分数:14.00)1. (分数:2.00)填空项 1:_2. (分数:2.00)填空项 1:_3. (分数:2.00)填空项 1:_4. (分数:2.00)填空项 1:_5. (分数:2.00)填空项 1:_6. (分数:2.00)填空项 1:_7.设 为 f(x)的一个原函数,则 (分数:2.00)填空项 1:_二、解答题(总题数:22,分数:44.00)8.解答题解答应写出文字说明、证明过程或演算步骤。(分数:2.00)_9.计算下列积分: (分数:2.00)_10.计算 (分数

2、:2.00)_11.计算下列不定积分: (分数:2.00)_12.计算 (分数:2.00)_13.计算 (分数:2.00)_14.计算 (分数:2.00)_15.计算 (分数:2.00)_16.计算 (分数:2.00)_17.求下列不定积分: (分数:2.00)_18. (分数:2.00)_19. (分数:2.00)_20. (分数:2.00)_21. (分数:2.00)_22. (分数:2.00)_23. (分数:2.00)_24. (分数:2.00)_25. (分数:2.00)_26. (分数:2.00)_27. (分数:2.00)_28. (分数:2.00)_29. (分数:2.00)_

3、考研数学三(不定积分)模拟试卷 2 答案解析(总分:58.00,做题时间:90 分钟)一、填空题(总题数:7,分数:14.00)1. (分数:2.00)填空项 1:_ (正确答案:正确答案: )解析:2. (分数:2.00)填空项 1:_ (正确答案:正确答案: )解析:3. (分数:2.00)填空项 1:_ (正确答案:正确答案: )解析:4. (分数:2.00)填空项 1:_ (正确答案:正确答案: )解析:5. (分数:2.00)填空项 1:_ (正确答案:正确答案: )解析:6. (分数:2.00)填空项 1:_ (正确答案:正确答案: )解析:7.设 为 f(x)的一个原函数,则 (

4、分数:2.00)填空项 1:_ (正确答案:正确答案: 则 )解析:二、解答题(总题数:22,分数:44.00)8.解答题解答应写出文字说明、证明过程或演算步骤。(分数:2.00)_解析:9.计算下列积分: (分数:2.00)_正确答案:(正确答案:(1)令 由 A(x+2)+B(x 一 1)=3x 一 2 得 解得 故 )解析:10.计算 (分数:2.00)_正确答案:(正确答案:令 由 A(1+x 2 )+(2x+1)(Bx+C)=3+3xx 2 得 解得 A=1,B=一1,C=2 故 )解析:11.计算下列不定积分: (分数:2.00)_正确答案:(正确答案: )解析:12.计算 (分数

5、:2.00)_正确答案:(正确答案: )解析:13.计算 (分数:2.00)_正确答案:(正确答案: )解析:14.计算 (分数:2.00)_正确答案:(正确答案: )解析:15.计算 (分数:2.00)_正确答案:(正确答案: )解析:16.计算 (分数:2.00)_正确答案:(正确答案:令 则 )解析:17.求下列不定积分: (分数:2.00)_正确答案:(正确答案: 由 A(2x 一 1)4-B(z+1)=x 一 1 得 解得 )解析:18. (分数:2.00)_正确答案:(正确答案: )解析:19. (分数:2.00)_正确答案:(正确答案:因为 所以 )解析:20. (分数:2.00

6、)_正确答案:(正确答案: )解析:21. (分数:2.00)_正确答案:(正确答案: )解析:22. (分数:2.00)_正确答案:(正确答案: )解析:23. (分数:2.00)_正确答案:(正确答案: )解析:24. (分数:2.00)_正确答案:(正确答案: )解析:25. (分数:2.00)_正确答案:(正确答案:因为 所以 )解析:26. (分数:2.00)_正确答案:(正确答案: )解析:27. (分数:2.00)_正确答案:(正确答案: )解析:28. (分数:2.00)_正确答案:(正确答案: )解析:29. (分数:2.00)_正确答案:(正确答案:因为(3+sinx cosx)=cos2x, 所以 )解析:

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