Khan Academy Static

Now that you have an intuitive understanding of limits, let's do what mathematicians do best and define them rigorously! This definition may be hard to grasp at first, but its beauty will get you in the end.

5471_Formal_definition_of_limits_Part_4_using_the_definition.html

5469_Formal_definition_of_limits_Part_2_building_the_idea.html

5468_Formal_definition_of_limits_Part_1_intuition_review.html

5470_Formal_definition_of_limits_Part_3_the_definition.html