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Calculate the following products with W|A app on a phone device?

mathematics wolfram alpha wolfram alpha apps algebra symbolic computations

Hi i would like to know how to calcul this kind of SUM in Mobile version Wolfram alpha ( iOS 10.2 ), thx i know about sum ( sum x=y, k=y to infinity ) for exaple but idk this types =\

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POSTED BY: Patrik Horvath
1 month ago

Could enter e.g. product (4k, k=1 to n )

POSTED BY: Daniel Lichtblau
1 month ago

Group Abstract Group Abstract