• 06 Quotient Rule proof
(f(x)/g(x))▽x = ｢(f(x+h)/g(x+h)−f(x)/g(x))/h :h⨠0｣ = ｢(f(x+h)·g(x)−f(x)·g(x+h))/(g(x+h)·g(x))/h :h⨠0｣ ➊ = ｢(f(x+h)·g(x)−f(x)·g(x+h))/h/(g(x+h)·g(x)) :h⨠0｣ = ｢(f(x+h)·g(x)−f(x)·g(x+h))/h :h⨠0｣ · ｢1/(g(x+h)·g(x)) :h⨠0｣ = ｢((f(x+h)−f(x))·g(x)−f(x)·(g(x+h)−g( ...
http://qindex.info/i.php?x=9692