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题1(2013年高考江苏卷第13题)在平面直角坐标系xOy中,设定点A(a,a),P是函数y=1/x(x>0)图象上一动点,若点P,A之间的最短距离为22(1/2),则满足条件的实数a的所有值为.数学考试结束后,多数同学反应“全卷总体难度不大,时间也够用,感觉不错”.其中一些同学还说他们“秒杀”了第13题(倒数第二题填空题).一般来说,江苏高考试题中第13、14题更注重考查学生的思维品质以及运用数学方法的能
Problem 1 In the plane Cartesian coordinate system xOy, the point A (a, a) is set, P is the point of motion on the image y = 1 / x (x> 0) Point P, A the shortest distance between the 22 (1/2), then meet the conditions of a real number of all A. After the end of the math test, most students react “whole volume overall difficulty is not enough, time is enough, Feel good. ”Some of the students also said that they “ spike ”the 13th (in the penultimate title fill in the title.) In general, Jiangsu 13th exam questions more focused on examining students’ thinking quality and The ability to use mathematical methods