来自郝玉兰的问题
设a>0,f(x)=ax2+bx+c,曲线y=f(x)在点P(x0,f(x0))处切线的倾斜角的取值范围为[0,π4],则P到曲线y=f(x)对称轴距离的取值范围为()A.[0,1a]B.[0,12a]C.[0,|b2a|]D.[0,|b−12a|]
设a>0,f(x)=ax2+bx+c,曲线y=f(x)在点P(x0,f(x0))处切线的倾斜角的取值范围为[0,π4],则P到曲线y=f(x)对称轴距离的取值范围为()
A.[0,1a]
B.[0,12a]
C.[0,|b2a|]
D.[0,|b−12a|]
1回答
2020-10-17 03:09