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二次函数与平行四边形的习题,不外乎两类:一类是能确定平行四边形的一组对边,这类比较简单,可以分析画图借助一组对边平行且相等求解,学生比较易懂;另一类是不能确定平行四边形的对边,这类题画图分析比较复杂,很难考虑到所有可能情况,往往是学生解题中比较困难的一点。为此,我归纳了一种求解二次函数与平行四边形的方法,和大家一起交流。记得在讲平行四边形时有这样
Quadratic function and parallelogram exercises, nothing more than two categories: one is to determine the parallelogram of a pair of opposite side, this is relatively simple, you can analyze the drawing with a parallel and parallel solution to the edge, the students easier to understand ; The other is not able to determine the opposite side of the parallelogram, the analysis of such problems is more complicated, it is difficult to take into account all possible situations, is often difficult for students to solve the problem. For this reason, I summarize a method for solving quadratic functions and parallelograms, and communicate with everyone. Remember this when speaking parallelograms