Also, is there a way to show the work for this, or does it have to be done in the head?
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a_n = [1+(-1)^{n-1}]/2 for n = 1,2,3,...
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Hi,
a(n) = 1/2 + 1/2(-1)^(n + 1) <==ANSWER
I hope that helps!! :-)
a(n) = 1/2 + 1/2(-1)^(n + 1) <==ANSWER
I hope that helps!! :-)
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Sorry, but I don't fully understand your query.