Differentiation limiting chord process; Differentiation limiting chord process; Product rule; y = u.v --> y' = u'v + v'u Quotient rule; Chain rule; if y = f(g(x)) --> y' = f'(g(x)).g'(x) Differentiation limiting chord process; Product rule; y = u.v --> y' = u'v + v'u Quotient rule; Chain rule; if y = f(g(x)) --> y' = f'(g(x)).g'(x) math