【考研类试卷】考研数学二-106及答案解析.doc

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1、考研数学二-106 及答案解析(总分:99.99,做题时间:90 分钟)一、解答题(总题数:6,分数:100.00)求下列不定积分:(分数:13.50)(1). (分数:2.70)_(2). (分数:2.70)_(3). (分数:2.70)_(4). (分数:2.70)_(5). (分数:2.70)_求下列不定积分:(分数:31.50)(1). (分数:4.50)_(2). (分数:4.50)_(3). (分数:4.50)_(4). (分数:4.50)_(5). (分数:4.50)_(6). (分数:4.50)_(7). (分数:4.50)_求下列不定积分:(分数:9.00)(1). (分数:

2、4.50)_(2). (分数:4.50)_求下列不定积分:(分数:9.00)(1). (分数:4.50)_(2). (分数:4.50)_求下列不定积分:(分数:22.50)(1).xcos 2 xdx;(分数:4.50)_(2).sec 3 xdx;(分数:4.50)_(3). (分数:4.50)_(4).cos(lnx)dx;(分数:4.50)_(5). (分数:4.50)_求下列不定积分:(分数:14.49)(1). (分数:4.83)_(2). (分数:4.83)_(3). (分数:4.83)_考研数学二-106 答案解析(总分:99.99,做题时间:90 分钟)一、解答题(总题数:6,

3、分数:100.00)求下列不定积分:(分数:13.50)(1). (分数:2.70)_正确答案:()解析:解 因为 所以 (2). (分数:2.70)_正确答案:()解析:解 因为 所以 (3). (分数:2.70)_正确答案:()解析:解 因为 所以 (4). (分数:2.70)_正确答案:()解析:解 令 (5). (分数:2.70)_正确答案:()解析:解 求下列不定积分:(分数:31.50)(1). (分数:4.50)_正确答案:()解析:解 (2). (分数:4.50)_正确答案:()解析:解 令 x=tant,则 (3). (分数:4.50)_正确答案:()解析:解 令 x=tan

4、t,则 (4). (分数:4.50)_正确答案:()解析:解 令 x=asint,dx=acostdt (5). (分数:4.50)_正确答案:()解析:解 令 x=sint, (6). (分数:4.50)_正确答案:()解析:解 令 (7). (分数:4.50)_正确答案:()解析:解 令 求下列不定积分:(分数:9.00)(1). (分数:4.50)_正确答案:()解析:解 (2). (分数:4.50)_正确答案:()解析:解 令 t=2 x , 求下列不定积分:(分数:9.00)(1). (分数:4.50)_正确答案:()解析:解 (2). (分数:4.50)_正确答案:()解析:解 令

5、 x=1/t, 求下列不定积分:(分数:22.50)(1).xcos 2 xdx;(分数:4.50)_正确答案:()解析:解 (2).sec 3 xdx;(分数:4.50)_正确答案:()解析:解 (3). (分数:4.50)_正确答案:()解析:解 (4).cos(lnx)dx;(分数:4.50)_正确答案:()解析:解 (5). (分数:4.50)_正确答案:()解析:解 求下列不定积分:(分数:14.49)(1). (分数:4.83)_正确答案:()解析:解 令 x=tant,则 (2). (分数:4.83)_正确答案:()解析:解 (3). (分数:4.83)_正确答案:()解析:解

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