Rewriting a symbolic Summation

mardi 1 avril 2014

Consider this Summation: ∑cos^2 (∏*n / 4) limits: -N to N



when I type that on wolframAlpha I get the following:



http://ift.tt/1jx3tAh





I have no Idea how it was performed though.





how Can I transform this from summation form to this other algebraic form?





0 commentaires:

Enregistrer un commentaire