共50条信息
已知\(f(x)\)是定义在\((0,+∞)\)上的函数,对任意两个不相等的正数\(x_{1}\),\(x_{2}\),都有\(x_{2}f(x_{1})-x_{1}f(x_{2}) < 0\),记\(a=\dfrac{f({{2}^{0.2}})}{{{2}^{0.2}}}\),\(b=\dfrac{f(\sin \dfrac{\pi }{6})}{\sin \dfrac{\pi }{6}}\),\(c=\dfrac{f({{\log }_{\pi }}3)}{{{\log }_{\pi }}3}(\) \()\)
已知函数\(f(x)=\ln x-\dfrac{1}{x}\)的零点为\(x\)\({\,\!}_{0}\),则下列结论正确的是( )
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