Sec 2 calculus
Lesson 1: Introduction to limits of function .
Lesson 2 : Finding the limit of a function algebraically.
Lesson 3 : Theorem (4) " The law "
Lesson 4 : Limit of the function at infinity
Lesson 5 : Limits of trigonometric functions .
Lesson 6: Existence of the limit of a piecewise function .
Lesson 7: Continuity .