This video lecture from Differentiation (F.Sc. second year Mathematics) covers: Question 1-3 of exercise 2.4. In these questions we find derivative by making suitable substitutions in the functions, find dy/dx by differentiating given equation, find dy/dx of the given parametric functions. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.