(a) Let n = 2k be an even integer. Show that x = rk is an...

(a) Let n = 2k be an even integer. Show that x = r^k is an element of order 2 which commutes with every element of D_n.

(b) Let n = 2k be an even integer. Show that x = r^k is the unique non-identity element which commutes with every element of D_n.

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Colby Messinger answered 1 year ago

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