Question about proof from a guy with a highschool education

  • #751
No need to bring any calculus or analysis into this CompuChip. The proof is pretty straight-forward without it. Just note that (2+ε)(2-ε) = 4-ε2 ≤ 4 (where -2 ≤ ε ≤ 2) to show that the quadratic is bounded above by 4 on the desired interval.
 
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  • #752
jgens said:
No need to bring any calculus or analysis into this CompuChip. The proof is pretty straight-forward without it. Just note that (2+ε)(2-ε) = 4-ε2 ≤ 4 (where -2 ≤ ε ≤ 2) to show that the quadratic is bounded above by 4 on the desired interval.

I'm not really sure what you're talking about at the end of your post but perhaps this is similar to what I attempted in my proof (see link in my post above)?
 
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