1987考研数学真题答案【篇一：历年考研数学一真题及答案(1987-2014)】ss=txt>数学(一)试卷一、填空题(本题共6小题,每小题4分,满分24分.把答案填在题中横线上)(1)曲线y?lnx上与直线x?y?1垂直的切线方程为__________.(2)已知f?(ex)?xe?x,且f(1)?0,则f(x)=__________.(3)设l为正向圆周x2?y2?2在第一象限中的部分,则曲线积分?lxdy?2ydx的值为__________.(4)欧拉方程x2d2ydx2?4xdydx?2y?0(x?0)的通解为__________.?210?(5)设矩阵a???...
年度地区1978197919801981198219831984198519861987198819896.2610.016219907.8700.020119916.2500.015919926.2590.015919936.4700.023019946.7440.030519956.7150.022419966.7940.022319977.0090.027419987.0880.027919997.1790.030920007.1140.036120017.6210.038120027.7340.047120037.9110.054920048.0100.057720057.8310.055620068.0400.062220078.1860.065620088.2700.067020098.3800.072920108.2100.089320118.8460.1006...
