Khan Academy Static

There are some limits that want us to work a little before we find them. Learn about two main methods of dealing with such limits: factorization and rationalization. For example, find the limit of (x²-1)/(x-1) at x=1.

4998_Finding_limits_by_factoring.html

5000_Finding_limits_by_factoring_cubic_.html

4999_Limits_by_rationalizing.html