[" यदि "alpha=e^(i2 pi/11)" तब "(alpha+a...

[" यदि "alpha=e^(i2 pi/11)" तब "(alpha+alpha^(2)+alpha^(3)+alpha^(4)+alpha^(5))" का वास्तविक भाग है - "],[[" (1) "(1)/(2)," (2) "1," (3) "-(1)/(2)]]

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