两曲线的交点问题转化为求方程组的公共解问题,进而转化为一元二次方程根的求解,同时,也可以数形结合思想为指导,动态地考察两曲线的位置关系.这两种方法各有优劣,本文以一道典型试题为例,对此做了一番探讨. The intersection of the two curves is transformed into the problem of public solution to the system of equations, which translates into the solution of the root of the quadratic equation. At the same time, the relationship between the two curves can be dynamically examined under the guidance of the combination of number and form. Each has advantages and disadvantages, this article takes a typical examination questions as an example, did some discussion.