y=(6x^3–3)/(x+5lnx–e)
y‘=18x^2/(x+5lnx–e)-(6x^3–3)/(x+5lnx–e)^2*(1+x/5)
=18x^2/(x+5lnx–e)-(6x^3–3)(5+x)/[5(x+5lnx–e)^2]
=18x^2/(x+5lnx–e)-(6x^4+30x^3-3x-15)/[5(x+5lnx–e)^2]
y=(6x^3–3)/(x+5lnx–e)
y‘=18x^2/(x+5lnx–e)-(6x^3–3)/(x+5lnx–e)^2*(1+x/5)
=18x^2/(x+5lnx–e)-(6x^3–3)(5+x)/[5(x+5lnx–e)^2]
=18x^2/(x+5lnx–e)-(6x^4+30x^3-3x-15)/[5(x+5lnx–e)^2]