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随着新课程改革的逐步进行,高等数学知识及高等数学思维正逐渐融入初高中阶段的数学教学与学习中。因此,很多教师在教学过程中致力于运用高等数学的方法解决高中阶段(尤其指高考)的数学问题。“四线一方程”便是这样一个例子。1什么是“四线一方程”“四线一方程”是指:对于一般的二次曲线Ax~2+Bxy+Cy~2+Dx+Ey+F=0,用x_0z代z~2,用y_0y代
With the gradual progress of the new curriculum reform, higher mathematics knowledge and higher mathematics thinking are gradually incorporated into the teaching and learning of mathematics in the upper and secondary high schools. Therefore, many teachers devote themselves to using mathematics to solve the math problems in high school (especially college entrance examination). “Four-line-one equation ” is one such example. 1 What is a “four-line-one equation” “four-line one equation” means: for the general quadratic curve Ax ~ 2 + Bxy + Cy ~ 2 + Dx + Ey + F = 0, with x_0z generation z ~ 2, with y_0y generation