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问题问题200这样的消参题错在哪里?题1设m∈R,求两条直线l_1:x+my+6=0,与l_2:(m-2)x+3y+2m=0的交点的轨迹方程.常规解法解方程组
Problem Question 200 What is wrong with this topic? Problem 1 Let m∈R, find the intersection of two straight lines l_1: x + my + 6 = 0 and l_2: (m-2) x + 3y + 2m = 0 Trajectory equations