先把他化成顶点式咯...y=(x-3)^2 - 4..得出对称轴是x=3,开口向上
然后因为x∈[-1 ,5]
所以[-1 ,3]递减...(3 ,5 ]递增
所以最值是y有最小值-4
做出函数y=x^2-6x+5,x∈[-1 ,5]的图像,并求出函数的单调区间和最值.
做出函数y=x^2-6x+5,x∈[-1 ,5]的图像,并求出函数的单调区间和最值.
数学人气:387 ℃时间:2020-06-06 08:48:44
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