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又一年的学业考试落下帷幕.听过老师们叽叽喳喳的谈论声后,我感到有必要结合2013年初中学业考试数学卷(衢州)第24题的答题情况和本人在监考过程中看到的考生的欠缺及试后调查情况再谈谈学业考试中考生应具备的数学能力.试题:在平面直角坐标系xOy中,过原点O及点A(0,2)、C(6,0)作矩形OABC,∠AOC的平分线交AB于点D.点P从点O出发,以每秒~(1/2)个单位长度的速度沿射线OD方向移动,同时点Q从点O出发,以每秒2个单位长度的速度沿x轴正方向移动.设移
After another year of academic examinations came to a close, I heard it necessary to combine with the answers given by Question 24 of the Mathematics Test for Secondary School Students (Quzhou) in early 2013 and the candidates I saw in the proctoring process And the situation after the test to talk about the mathematical ability of the candidates should have in the academic test.Experiment: In the rectangular Cartesian coordinate system xOy, over the origin O and point A (0,2), C (6,0) as a rectangle OABC, ∠AOC bisecting line AB at point D. Point P starting from point O, at a rate of ~ (1/2) units per second speed along the direction of the radiation OD, while point Q starting from the point O, every Sec The speed of 2 unit length moves along the positive direction of x axis