幂函数f(x)的图像过点（3、根号下27开4次方）,则f(x)的解析式为
人气：343 ℃ 时间：2019-08-21 09:43:58
解答
设f(x)的解析式为y=x^a(y=x的a次方)
代入点：(27)^1/4=3^a
a=3/4
解析式为y=x^(3/4)
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