Main Ideas

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Here are the main points that will be addressed in the videos. Please read these and think about them as you watch.

A limit exists at a point if it is possible to approximate the value of a function or a hole in the function as accurately as desired
Better approximations to the limit can be found by finding overestimates and underestimates which are closer to one another
The error is less than or equal to the difference between an overestimate and an underestimate