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本文在数学教学的基础上,探究点M(x0,y0)位于圆锥曲线的内部或外部时直线方程x0x/a~2±y0y/b2=1的实质和应用,运用文中的结论和方法可快捷地解决一类圆锥曲线的切线问题.
Based on the teaching of mathematics, this paper explores the essence and application of the linear equation x0x / a ~ 2 ± y0y / b2 = 1 when the point M (x0, y0) is inside or outside the conic. To solve a class of conic tangents problem.