求导数 y=(-3x^4+3x^2-5)/x^3
问题描述:
求导数 y=(-3x^4+3x^2-5)/x^3
y=(-3x^4+3x^2-5)/x^3
y=1/(1+sinx)
-
y=1/(1-x)
求详细过程,谢谢.
答
1)y = (-3x^4+3x^2-5)/x^3,y' = [(-12x^3+6x)*(x^3)-(3x^2)*(-3x^4+3x^2-5)]/x^6 = ……; 2)y = 1/(1+sinx),y' = -[1/(1+sinx)²]*cosx = ……; 3)y = 1/(1-x),y' = -[1/(1-x)²]*(-1) = 1/(...