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五邑大学学期:20092010学年度2学期课程:高等数学(I竞赛专业:姓名:完整学号:题号得分一、得分填空题(每小题5分,总计40分)x8a1.设lim8,axxa2.设f(x(x1(x2(x3(x4x3(x100,则df|x1.dx3.在x1时取极大值6x3时取极小值2的最低次幂多项式的表达式是4.设eyxye,则y(0=105.设f(x是连续函数,且f(xx2f(tdt,则f(x.6.计算max(|x|,x2dx___________.227.积分Idxe0x22y2dy的值为.L8.设L为取正向的圆周x2y29,则(2xy2ydx(x24xdy二、得分选择题(每小题5分,总计50分)1.下列命题中正确的命题有几个?1)无界变量必为无穷大量;(2有限多个无穷大量之和仍为无穷大量;3)无穷大量必为无界变量;(4无穷大量与有界变量之积仍为无穷大量.(A1个;(B2个;(C3个;(D4.1
1xsin,x01,x0g(xx2.f(x0,x01,x0x0是间断点的函数是(Af(xg(x(Bf(xg(x(Cmaxf(x,g(x(Dminf(x,g(x3.f(xarctanx[0,b]上应用拉格朗日中值定理的中值,则limb02b212(A1(B(C13(D14.4.f(x有连续导数,且f(00,f'(00F(xx0(x2t2f(tdt,当x0时,F'(xx是同阶无穷小,则k(A4(B3(C2(D1.2x5.下列微分方程中,通解为ye(C1cosxC2sinx的方程是(kAy4y5y0By4y5y0Cy2y5y0Dy4y5yezzby6.设f为可微函数,xazf(ybz,则xa2x(A1(Ba(Cb(Dab2222xyzR,z0217.x2y2z2R2,x0,y0,z0。则以下结论正确的是(Axdv4xdv12B1ydv4ydv2C1zdv4zdv2D1zyxdv4xdvzy28.已知曲面z4x2y2上点P处的切平面平行于平面2x2yz1,则P的坐标为((A(1,1,2(B(1,1,2(C(1,1,2(D(1,1,2.2

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