共50条信息
已知函数\(f\left( x \right){=}x^{3}{+}ax^{2}{-}3x{+}b\)在\(x{=}{-}1\)处的切线平行于\(x\)轴,则\(f\left( x \right)\)的极大值与极小值的差为\((\) \()\)
\((1)\)若函数\(f(x)\)的图象过原点,且在原点处的切线斜率为\(-3\),求\(a\),\(b\)的值;
\((2)\)若曲线\(y=f(x)\)存在两条垂直于\(y\)轴的切线,求\(a\)的取值范围.
求与曲线\(y=f(x)= \sqrt[3]{{x}^{2}} \)在点\(P(8,4)\)处的切线垂直,且过点\((4,8)\)的直线方程.
函数\(f(x)=a\sin ax(a∈R)\)的图像过点\(P(2π,0)\),并且在点\(P\)处的切线斜率为\(4\),则\(f(x)\)的最小正周期为( )
设曲线\(y=\dfrac{1+\cos x}{\sin x}\)在点\((\dfrac{\pi }{2},1)\)处的切线与直线\(x-ay+1=0\)平行,则实数\(a=\)________.
设\(f(x)=\begin{cases} \sqrt{1-{x}^{2}} \\ {x}^{2}-1,x∈[1,2]\end{cases},x∈[-1,1) \),则\(∫_{-1}^{2}f(x)dx \)的值为\((\) \()\)
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