y=3x^{-1/2}在x=3处的导数

问题描述:

y=3x^{-1/2}在x=3处的导数

解析,导数y‘=-3/2*x^(-3/2)
当x=3时,y’=-√3/6.

y'=-3/2x^(-3/2)
x=3 y'(x=3)=-3/2*3^(-3/2)
=-√3/6