y=x2-2x+6=x2-2x+1+5
=(x-1)2+5,
可見,二次函數(shù)的最小值為5.
故答案為:5.
二次函數(shù)y=x2-2x+6的最小值是_.
二次函數(shù)y=x2-2x+6的最小值是______.
數(shù)學(xué)人氣:321 ℃時間:2020-01-30 06:20:58
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