共50条信息
已知函数\(f\left(x\right)= \dfrac{1}{2}{x}^{2}-ax+\ln x\left(a∈R\right) \).
\((1)\)若\(f\left(x\right) \)在定义域上不单调,求\(a\)的取值范围;
\((2)\)设\(a < e+ \dfrac{1}{e} \),\(m\),\(n\)分别是\(f\left(x\right) \)的极大值和极小值,且\(S=m-n\),求\(S\)的取值范围.
已知\(U=\{y/y=\log _{2}x,x > 0)\),\(P=\{y/y=\dfrac{1}{x},x > 2\}\),则\({{\complement }_{U}}P=(\) \()\)
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