求y=(3-x2)/(3+x2)的导数
问题描述:
求y=(3-x2)/(3+x2)的导数
答
解y=(3-x²)/(3+x²)y'=[(3-x²)'(3+x²)-(3-x²)(3+x²)']/(3+x²)²=[-2x(3+x²)-(3-x²)(2x)]/(3+x²)²=(-6x-2x³-6x+2x³)/(3+x²)²=(-12x)...
求y=(3-x2)/(3+x2)的导数
解y=(3-x²)/(3+x²)y'=[(3-x²)'(3+x²)-(3-x²)(3+x²)']/(3+x²)²=[-2x(3+x²)-(3-x²)(2x)]/(3+x²)²=(-6x-2x³-6x+2x³)/(3+x²)²=(-12x)...