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若函数\(y\)\(=\)\(f\)\((\)\(x\)\()\)是函数\(y\)\(=\)\(a^{x}\)\((\)\(a\)\( > 0\),且\(a\)\(\neq 1)\)的反函数,且\(f\)\((2)=1\),则\(f\)\((\)\(x\)\()=\)( )
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\((\) \()\)
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