Optional videos (K-A)

S#	Lecture	Course	Institute	Discipline
1	Formal definition of limits Part 1: intuition review (K-A)	Optional videos (K-A)	Khan Academy	Basic and Health Sciences
2	Formal definition of limits Part 2: building the idea (K-A)	Optional videos (K-A)	Khan Academy	Basic and Health Sciences
3	Formal definition of limits Part 3: the definition (K-A)	Optional videos (K-A)	Khan Academy	Basic and Health Sciences
4	Formal definition of limits Part 4: using the definition (K-A)	Optional videos (K-A)	Khan Academy	Basic and Health Sciences

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