共50条信息
如果直线\(ax-y+2=0\)与\(3x-y-b=0\)关于直线\(y=x\)对称,则\(a\),\(b\)的值分别为( )
设点\(P\)在曲线\(y=\dfrac{1}{2}{{e}^{x}}\)上,点\(Q\)在曲线\(y=\ln (2x)\)上,则\(|PQ|\)最小值为\((\) \()\)
若函数\(y=f(x) \)是函数\(y={a}^{x} (a > 0 \),且\(a\neq 1 )\)的反函数,其图象经过点\(( \sqrt{a},a) \),则\(f(x) =\)( )
函数\(f\left( x \right)={{x}^{2}}\left( x < -2 \right)\)的反函数是 .
若函数\(y=f\left( x \right)\)是函数\(y=a^{x}(a > 0\)且\(a\neq 1)\)的反函数,且\(f\left( 2 \right)=1\),则\(f\left( x \right)=(\) \()\)
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