已知函数f(x)=x3+2x2-ax+1 (1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值 (2)若函数g(x)=f(x)导已知函数f(x)=x3+2x2-ax+1(1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值(2)若函数g(x)=f(x)导数在
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![已知函数f(x)=x3+2x2-ax+1 (1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值 (2)若函数g(x)=f(x)导已知函数f(x)=x3+2x2-ax+1(1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值(2)若函数g(x)=f(x)导数在](/uploads/image/z/5197379-59-9.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dx3%2B2x2-ax%2B1+%281%29%E8%8B%A5%E5%87%BD%E6%95%B0f%28x%29%E5%9C%A8%E7%82%B9%281%2Cf%281%29%29%E5%A4%84%E7%9A%84%E5%88%87%E7%BA%BF%E6%96%9C%E7%8E%87%E4%B8%BA4%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC+%282%29%E8%8B%A5%E5%87%BD%E6%95%B0g%28x%29%3Df%28x%29%E5%AF%BC%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dx3%2B2x2-ax%2B1%281%29%E8%8B%A5%E5%87%BD%E6%95%B0f%28x%29%E5%9C%A8%E7%82%B9%281%2Cf%281%29%29%E5%A4%84%E7%9A%84%E5%88%87%E7%BA%BF%E6%96%9C%E7%8E%87%E4%B8%BA4%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC%282%29%E8%8B%A5%E5%87%BD%E6%95%B0g%28x%29%3Df%28x%29%E5%AF%BC%E6%95%B0%E5%9C%A8)
已知函数f(x)=x3+2x2-ax+1 (1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值 (2)若函数g(x)=f(x)导已知函数f(x)=x3+2x2-ax+1(1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值(2)若函数g(x)=f(x)导数在
已知函数f(x)=x3+2x2-ax+1 (1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值 (2)若函数g(x)=f(x)导
已知函数f(x)=x3+2x2-ax+1
(1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值
(2)若函数g(x)=f(x)导数在区间(-1,1)上存在零点,求实数a的取值范围
已知函数f(x)=x3+2x2-ax+1 (1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值 (2)若函数g(x)=f(x)导已知函数f(x)=x3+2x2-ax+1(1)若函数f(x)在点(1,f(1))处的切线斜率为4,求实数a的值(2)若函数g(x)=f(x)导数在
对f(x)求导,f'(x)=3x^2+4x-a
(1).由已知,得f'(1)=4,即7-a=4,得a=3.
(2).g(x)=f'(x)=3x^2+4x-a
在(-1,1)有零点,即g(-1)g(1)
1
,f(x)的导数为3x2+4x-a则由(1)可知f(1)的导数为4所以由3+4-a=4则a=3
2,f(1)的导数乘以f(-1)的导数小于零,解嘚a大于-1小于7,我是新手,请给点份谢谢
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