Let a sequence {a_n}, n= 1, 2, 3, ... be defined recursively by a_1=1, and a_na_(n-1)+n n!, n>1. Then, an expression for a_nis a. a_nn! +1, n ≥1 O b. None of the Above O c. a_nn!, n ≥ 1 O d. a_nn!-1, n ≥1 e. a_n(n+1)! — 1, n ≥ 1 O f. a_n (n + 1)! + 1, n ≥ 1 Og. a_n (n + 1)!, n ≥1

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A: - The question wants to know the features and applications of SQL functions.

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A: The solution is given below for the above-given question:

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A:

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A: To be determine: Explain the use of SQL's identity column capability.

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A: This question is related to SQL queries.

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A: The question is solved in step2