y=根號[-(x^2+4x)+5]
=根號[-(x+2)^2+9]
當(dāng)x=-2時取最大值
y最大=根號9=3
函數(shù)y=根號下-x^2-4x+5 (x∈R^+)的最大值是
函數(shù)y=根號下-x^2-4x+5 (x∈R^+)的最大值是
數(shù)學(xué)人氣:203 ℃時間:2020-06-21 16:35:37
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