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二次函数f(x) =a(x-m) 2 +n(a≠ 0 ) ,在参数区间 (c ,d)上的最值 ,以直角坐标轴是两对相对位置为线索进行了详细的分类、分析和讨论
The quadratic function f(x) = a(xm) 2 + n(a ≠ 0). The maximum value in the parameter interval (c, d) is classified in detail based on the two pairs of relative positions of the Cartesian coordinate axis. , analysis and discussion