Question: (a) Prove a formula similar to the one in Problem 7(a) but involving arccot instead of arc tan. (b) Find the sum of the series

(a) Prove a formula similar to the one in Problem 7(a) but involving arccot instead of arc tan.
(b) Find the sum of the series


E arccot(n? + n + 1) n-0

E arccot(n? + n + 1) n-0

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