共50条信息
已知函数\(f(x)={{x}^{2}}\ln x-2x\).
\((\)Ⅰ\()\)求曲线\(y=f(x)\)在点\((1,f(1))\)处的切线方程;
\((\)Ⅱ\()\)求证:存在唯一的\({{x}_{0}}\in (1,2)\),使得曲线\(y=f(x)\)在点\(({{x}_{0}},f({{x}_{0}}))\)处的切线的斜率为\(f(2)-f(1)\);
\((\)Ⅲ\()\)比较\(f(1.01)\)与\(-2.01\)的大小,并加以证明.
若直线\(y=kx+b\)是曲线\(y=\ln x+2\)的切线,也是曲线\(y=\ln (x+1)\)的切线,则\(b= \)_________.
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