y=(x+1)(x+2)(x+3)的导数?
问题描述:
y=(x+1)(x+2)(x+3)的导数?
答
y=(x+1)(x+2)(x+3)=(x+1)'(x+2)(x+3)+(x+1)(x+2)'(x+3)+(x+1)(x+2)(x+3)'=(x+2)(x+3)+(x+1)(x+3)+(x+1)(x+2)=x²+5x+6+x²+4x+3+x²+3x+2=3x²+12x+11