二次函数在闭区间上的最值问题,有四种类型:(1)定轴,定区间;(2)定轴,动区间;(3)动轴,定区间;(4)动轴,动区间。文章对此进行了探讨。%Quadratic function on the closed interval of the most value problem, there are four types: ( 1 )fixed axis, the given interval; ( 2 ) fixed axis, dynamic range; ( 3 ) moving axes, fixed interval; ( 4 )moving axes, fixed interval.The paper talks about this issue.
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