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Sep
29
answered Express $(a*b)^{-1}$ in terms of $a^{-1}$ and $b^{-1}$.
Nov
9
awarded  Teacher
Nov
9
answered Extra $100 after borrowing and shopping
Sep
12
comment How can I get sequence $4,4,2,4,4,2,4,4,2\ldots$ into equation?
@Matt E I'm quite familier with the Fourier theory. However, if someone is not going to use the formula for anything else besides determing the value of the nth position, then it is overly complex (and thus inefficient) when above formula provides the same.
Sep
11
comment How can I get sequence $4,4,2,4,4,2,4,4,2\ldots$ into equation?
ROFL. I'm guessing this is merely caused by people wanting to top the "approved" answer, since that answer is computationally very inefficient.
Sep
11
awarded  Supporter
Sep
11
comment How can I get sequence $4,4,2,4,4,2,4,4,2\ldots$ into equation?
Assuming you only want to determine the nth entry of a sequence, this would be the most efficient way of calculating it.