(x平方-1)立方+3求导
问题描述:
(x平方-1)立方+3求导
答
导数=3(x²-1)²*(x²-1)'+0
=6x(x²-1)²这步没懂 3(x²-1)²*(x²-1)'u=x²-1则u'=2xy=u³+3所以y'=3u²*u'=3(x²-1)²*(x²-1)'