[考研类试卷]考研数学(数学一)模拟试卷347(无答案).doc

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考研数学(数学一)模拟试卷 347(无答案)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 若 f(-x)=f(x)(-0,f“(x)0,f“(x)0,f“(x)0(C) f(x)02 3 4 设函数 f(x, y)连续,F(u,v)= ,其中区域 Duv 为图中阴影部分,则 =( )(A)vf(u 2)(B) v/u f(u2)(C) vf(u)(D)v/u f(u)5 6 7 8 二、填空题9 设 ,E 为 4 阶单位矩阵,且 B=(E+A)-1(E-A),则(E+B) -1=_10 11 12 13 设函数 yy(x) 由方程 exy cos(xy)0 确定,则 dydx_14 (2009 年试题,二) 设函数 f(u,v)具有二阶连续偏导数, z=f(x,xy),则_.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 设向量 (a 1,a 2,a n)T,(b 1,b 2,b n)T 都是非零向量,且满足条件T0,记 n 阶矩阵 A T,求: (I)A 2; ()矩阵 A 的特征值和特征向量20 设 X 的概率密度为 且 PX1= ()求a,b 的值;()求随机变量 X 的分布函数;()求 Y=X3 的密度函数21 22 23 将 展开成 x 的幂级数,并指明其成立范围,并求级数 的和

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