This video lecture from Functions and Limits (F.Sc. second year Mathematics) covers: Question 4-6 of exercise 1.4. In these questions we are given with the information of existence of limit and continuity and we use the definition to extract the values of unknown constants from the function. 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.