Calculus
posted by Jade on .
Define the quotient rule.

If f and g are functions of x
d/dx(f/g) = (f'g  fg')/g^2
This is just a variation of the wellloved product rule, where f/g = f * g^1
d/dx(f * g^1) = f'*g^1 + f*(1)g^2 * g'
= f'/g  fg'/g^2
= (f'g  fg')/g^2