Скачать или смотреть How to write epsilon-delta proofs for limits? (x^3 and 1/x examples)

Here's the easy way to write epsilon-delta proofs for limits. Usually, the epsilon-delta definition is taught in college calculus 1 (or real analysis in upper-division pure math but not in AP calculus). I think it is the hardest topic in Calculus 1. Let me know what you think!
Check out the Introduction to εδ definition of the limit 👉    • epsilon-delta definition ultimate introduc...  
More examples of writing εδ proofs 👉    • Limit proofs w/ the epsilon-delta definiti...  

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0:00 proving the limit of x^3 as x goes to 2
5:37 proving the limit of 1/x as x goes to 2
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