Question

Differntiate f(x) = (sinx)/(1+cosx)

Answer 1

d/dx (u/v) = (u' v - v' u)/(v^2) <---quotient rule
d/dx(u/v) = u' /v + (1/v)' u <--- product rule
both are the same thing..
hope this helps..

Answer 2

note: u' means du/dx ,,same with v (ofcorse).