y=f(x) *g(x)那么求导就得到y'=f '(x) *g(x) +f(x) *g'(x)显然在这里y=(x-1)²(x+1)³那么就得到y的导数y'=[(x-1)²]' *(x+1)³ +(x-1)² *[(x+1)³]'=2(x-1) *(x+1)³ +(x-1)² * ...