求y=(2+3x)(3-5x+x^2)的导数.

问题描述:

求y=(2+3x)(3-5x+x^2)的导数.

=[3(3-5x+x^2)-(2+3x)(-5+2x)]/(3-5x+x^2)^2= (19+4x-6x^2)/(3-5x+x^2)^2