共50条信息
已知函数\(f\)\((\)\(x\)\()=\)\(a\)\(\ln \)\(x\)\(- \dfrac{1}{x}\),\(a\)\(∈R\).
\((1)\)若曲线\(y\)\(=\)\(f\)\((\)\(x\)\()\)在点\((1,\)\(f\)\((1))\)处的切线与直线\(x\)\(+2\)\(y\)\(=0\)垂直,求\(a\)的值;
\((2)\)求函数\(f\)\((\)\(x\)\()\)的单调区间.
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