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Thanks a lot. My prof was getting on with me having to add in another variable, like j for instance. and that messed me up. I guess i still would for the output though.
use like, three variables? n,...

cool, thanks. so what does the question mark do? what function does it serve i mean

Hi i have a question if anybody can help me. I need to take a positive input, n, and and produce an output that is the sum of the alternating series.
i.e. n=5 the nthe output would be 3 because 1 -...