利用二次函数思路巧解不等式问题

Solving Quadratic Inequality Problem Function Ideas

在学习中,我们常常会遇到解方程及不等式问题,按常规方法很难分析得出结果,但是利用二次函数思想经过分析,问题就可以迎刃而解了。

Learning,we often encounter the problem of solving equations and inequalities,obtained by conventional methods difficult to analyze the results,but thinking through the use of a quadratic function of the problem can be solved.