Uploaded February 2022 | Updated September 2026, 2 weeks ago

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Epsilon-Delta definition explanation: youtu.be/JbbRaiXI6yw

Proofs that use the delta-epsilon definition of the limit can be confusing because it seems like we can prove that the limit is anything we want if we pick the right value of delta. In this video we prove that limits are unique and go over some examples of disproving limits!

Calculus Problems playlist: youtube.com/playlist?list=PLug5ZIRrShJGFne7YhMi-4eYsUKzkITao

0:00 Background
3:46 Example 1
9:46 Example 2
15:45 Backward proof?
17:14 Proof of uniqueness

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Music: C418 - Pr Department