用导数讨论函数y=ax/(x^2-1) (-1
问题描述:
用导数讨论函数y=ax/(x^2-1) (-1
答
y=ax/(x^2-1)
y'=[(ax)'(x^2-1)-ax(x^2-1)']/(x^2-1)^2
=[a(x^2-1)-ax*2x]/(x^2-1)^2
=-1/(x^2-1)^2
因为-1