y=sec^2x+csc^2x求导是应该计算y'=sec^2xtan^2x·x'+(-cscx)^2·cotx^2·x'吗?

问题描述:

y=sec^2x+csc^2x求导
是应该计算y'=sec^2xtan^2x·x'+(-cscx)^2·cotx^2·x'吗?