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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#26 2012-10-20 09:35:04

zetafunc.
Guest

Re: Factorising a^n + kb^n

Has knowing those factorisations come in handy?

#27 2012-10-20 09:39:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,444

Re: Factorising a^n + kb^n

Not at all. Do you think I would stuff my primitive cerebrum with the mere memorization of identities? But the looking up of them when necessary has been a great help.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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