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求函数y=√x√x√x的导数
人气:305 ℃ 时间:2019-09-11 09:54:18
解答
y=√[x√(x*x^(1/2))]
=√[x√(x^(3/2))]
=√[x*x^(3/4)]
=√[x^(7/4)]
=x^(7/8)
所以y'=7/8*x^(-1/8)
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