hello all, i am in year 12 now and trying to differentiate an equation as proof that my thesis on traffic flow is accurate.

problem is i can't seem to differentiate it.

equation: Y=(1000x)/(4+(0.2x+0.001x^2))

i used some online ones but they wouldn't help me..

if you could attemp to work out Dy/Dx for me i would greatelly appreciate it!