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 TerkaitLimits to Altitude Height for Electric Jets? – aviation.stackexchange.comshell expansion (A|B) in filenames? – unix.stackexchange.comQuestion about limits, derivative definition – math.stackexchange.comHow do victims of extended coma survive in the World of Fire and Ice? – scifi.stackexchange.comProgram behaving strangely on online IDEs – stackoverflow.comDerivative of arcsin(x) – math.stackexchange.com
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