y=3x^3 - 根号x分之1+lne =3x^3 - 根号x分之1+1(3x^3)导=6x^2,( 根号x分之1)导=(x^(-1/2))导= - (1/2)x^(-1/2)(1)导=0y导=6x^2+(1/2) x^(-1/2)结果一 题目 求y=3x的三次方减去根号x分之1加上lne的导数, 答案 y=3x^3 - 根号x分之1+lne =3x^3 - 根号x分...
y=3x^3 - 根号x分之1+lne =3x^3 - 根号x分之1+1 (3x^3)导=6x^2，（ 根号x分之1）导=（x^(-1/2)）导= - (1/2)x^(-1/2)(1)导=0 y导=6x^2+(1/2) x^(-1/2)
y=3x^3 - 根号x分之1+lne =3x^3 - 根号x分之1+1 (3x^3)导=6x^2,（ 根号x分之1）导=（x^(-1/2)）导= - (1/2)x^(-1/2)(1)导=0 y导=6x^2+(1/2) x^(-1/2)