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题目经过点P(4,3)的直线l与x轴、y轴的正半轴分别交于A、B两点,当△AOB的面积最小时,求直线l的方程.解法1:利用直线的点斜式方程.
The problem that the straight line l of the point P (4, 3) crosses the positive axis of the x-axis and the y-axis to point A and B, respectively, and the equation of the line l is obtained when the area of the AOB is the smallest. Solution 1: Point oblique equation.