Mathematics Asked by Andrew Lewis on November 27, 2020

${4, -2, 4, -2, dots}$

$a_n = ?$

What is the formula for the general term $a_n$ of the sequence?

I know that it starts in the numerator with $(-1)^{n-1}$ in order to alternate between positive and negative, but I can’t seem to figure out the rest.

The homework problem I am working on requires it to be a non-piecewise function.

$a_n=1-3cdot(-1)^n$ works if you don't want a piecewise definition

Answered by OnlyDay on November 27, 2020

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