怎么求函数y=(x-2)³(3x+1)²的导数y'=3(x-2)²(3x+1)²+(x-2)³×2(3x+1)×3 y'=3(3x+1)(x-2)²(3x+1)+6(x-2)(x-2)²(3x+1) y'=(9x+3+6x-12)(x-2)²(3x+1) y'=3(5x-3)(3x+1)(x-2)²y'=3(x-2)²(3x+1)²+(x-2)