共50条信息
已知幂函数\(f(x){=}{(m{-}1)}^{2}x^{m^{2}{-}4m{+}2}\)在\((0{,}{+∞})\)上单调递增,函数\(g(x){=}2^{x}{-}t\),对于任意的\(x_{1}{∈[}1{,}6)\),总存在\(x_{2}{∈[}1{,}6)\),使得\(f(x_{1}){=}g(x_{2})\),则\(t\)的取值范围是\((\) \()\)
已知幂函数\(f\left( x \right)\)过点\(\left( 4,\dfrac{1}{2} \right)\),则\(f\left( x \right)=\)_________ .
下列关于幂函数\(y=x^{α}(α∈Q)\)的论述中,正确的是( )
已知幂函数\(y=f(x)\)的图像过点\((2,\sqrt{2})\),则\(f(9)=\)________.
已知幂函数\(f\left( x \right)={{x}^{a}}\)的图像经过点\(\left( 2,\dfrac{\sqrt{2}}{2} \right)\),则\(f\left( 4 \right)\)的值等于\((\) \()\)
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