为什么[F(2-X)]'=-F'(2-X)谢啦～
为什么[F(2-X)]'=-F'(2-X)谢啦～
数学人气：554 ℃时间：2019-10-30 22:20:12
优质解答
求导后,对内层求导,2-x,为负一,所以在前面加一个负号可以使求导产生的负号抵消,这样就等同于前面的[F(2-X)]',
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