learning proofs, need someone to check my solution | Mathematics | Page 1

finite pagoda Aug 1, 2024, 5:29 PM

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hi all, I’m attempting to learn how to write proofs as I’m taking a theory of computation course next semester that’s very proof heavy. in high school, we skipped over proofs as we started learning the topic when Covid hit, and thus there is a gap in my mathematical knowledge. Could someone tell me if my solution to this rather simple proof, is correct, and if I have the right idea?

placid swanBOT Aug 1, 2024, 5:29 PM

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fervent vessel Aug 1, 2024, 5:41 PM

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nice proof man

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i think you can try looking for a much straight proof

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like

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you can factorize x^2 - 6x + 5

finite pagoda Aug 1, 2024, 5:49 PM

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fervent vessel nice proof man

thank you! is my line 3 correct though? As now I’m second guessing myself

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I think I forgot to also divide -5 by 2a, no?

robust burrow Aug 1, 2024, 6:20 PM

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Yea

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And also you need to consider a = 0 separately

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I would try this to show

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(2a)²-6(2a)+5 = 2a+1

Where 2a+1 is an odd number

#learning proofs, need someone to check my solution