OK, with a summation of the form (say)
sum_(n mod 5) x^5n
then I get 1 + x^5 + x^10 + x^15 + x^20
but does this sum mean I am now actually in mod 5? So I could then cancel it down to 5 ? My initial thoughts would be that the mod only applies to substituted values - but it would be useful it did work... :)
Anyone clarify this?
Thanks!
sum_(n mod 5) x^5n
then I get 1 + x^5 + x^10 + x^15 + x^20
but does this sum mean I am now actually in mod 5? So I could then cancel it down to 5 ? My initial thoughts would be that the mod only applies to substituted values - but it would be useful it did work... :)
Anyone clarify this?
Thanks!
via JREF Forum http://forums.randi.org/showthread.php?t=283356&goto=newpost
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