[考研类试卷]考研数学(数学三)模拟试卷222及答案与解析.doc

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1、考研数学(数学三)模拟试卷 222 及答案与解析一、选择题下列每题给出的四个选项中,只有一个选项符合题目要求。1 2 3 4 5 6 设函数 f(x),g(x) 具有二阶导数,且 g“(x)0)=a 是 g(x)的极值,则 fg(x)在 x0 取极大值的一个充分条件是(A)f(a)0(C) f“(a)0 7 8 二、填空题9 10 11 12 13 14 ,则 a=_.三、解答题解答应写出文字说明、证明过程或演算步骤。15 16 17 18 19 20 21 22 求下列不定积分:23 求柱面 x2y 2ax 含于球面 x2y 2z 2a 2 内的曲面面积 A.考研数学(数学三)模拟试卷 22

2、2 答案与解析一、选择题下列每题给出的四个选项中,只有一个选项符合题目要求。1 【正确答案】 C【试题解析】 2 【正确答案】 A【试题解析】 3 【正确答案】 C【试题解析】 4 【正确答案】 C【试题解析】 5 【正确答案】 D【试题解析】 6 【正确答案】 B【知识模块】 微积分7 【正确答案】 C8 【正确答案】 D二、填空题9 【正确答案】 (8,+).10 【正确答案】 2【试题解析】 11 【正确答案】 【试题解析】 12 【正确答案】 213 【正确答案】 14 【正确答案】 2【知识模块】 函数、极限、连续三、解答题解答应写出文字说明、证明过程或演算步骤。15 【正确答案】 16 【正确答案】 17 【正确答案】 18 【正确答案】 19 【正确答案】 20 【正确答案】 21 【正确答案】 22 【正确答案】 【知识模块】 综合23 【正确答案】 【知识模块】 综合

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