Summation of roots of unity – math.stackexchange.com 04:03 Posted by Unknown No Comments Find the value of $\displaystyle\sum_{r=1}^{4} \frac{1}{2-\alpha^r} $ where $ \alpha^k (k=0,1,2,3,4,5) $ are fifth roots of unity. My approach:- As we know that $ \alpha^k (k=0,1,2,3,4,5) $ are ... from Hot Questions - Stack Exchange OnStackOverflow via Blogspot Share this Google Facebook Twitter More Digg Linkedin Stumbleupon Delicious Tumblr BufferApp Pocket Evernote Unknown Artikel TerkaitAirship defence against pack of flying creatures – worldbuilding.stackexchange.comCan I overcome the bandwidth limitation on my photonic railways? – worldbuilding.stackexchange.comWere warforged starting ages ever explained? – rpg.stackexchange.comApproximate My Squares – codegolf.stackexchange.comCan a rational creature have a series of small brains instead of a large one? – worldbuilding.stackexchange.comWhat could lead a very poor country to arise as an economic potence? – worldbuilding.stackexchange.com
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