I really do not get proofs AT ALL. Stuff like this....(adsbygoogle = window.adsbygoogle || []).push({});

"Prove that (n+1)^{2 [tex]\geq[/tex]}3^{n}if n is a positive integer with n[tex]\leq[/tex]4."

Proof by exhaustion would be applied here.. what the book tells me.

"Show that there are no solutions in integers x and y of x^{2}+3y^{2}=8."

Then there's also "Constructive Existence Proof" and "Nonconstructive proof". No idea how to do any one of them. How do I approach those equations, and how do I know which proof I need to use??

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# I really do not get proofs AT ALL.

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