答：f(x)=x²×³√x²=x²×x^(2/3)=x^(8/3)求导：f'(x)=(8/3)x^(5/3)=(8x/3)³√x²所以：(x²×³√x²)'=(8x/3)³√x²f(x)=x²×3√x²=3|x|...