Determine whether each of these functions f: z times z rightarrow z is one-to-one, on-to, one-to-one correspondence, respectively. a) f (n) = n - 1 b) f (n) = n^2 + 1 c) f (n) = n^3 d) f (n) = [n/2]

In a response of approximately 50 words, explain why it would be essential for the successful a/v technician to participate in additional coursework, presentations and seminars offered by equipment manufacturers as well as annual conferences attended by colleagues in the industry.

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Which excel file extension stores automated steps for repetitive tasks?