Find a Formula for the Nth Term of the Sequence $9 , - 9,9 , - 9,9$

question 146

Multiple Choice

Find a formula for the nth term of the sequence.
- $9 , - 9,9 , - 9,9$ (9's with alternating signs)

• A) \(a _ { n } = 9 ( - 1 ) ^ { 2 n + 1 }\)
• B) \(a _ { n } = 9 ( - 1 ) ^ { n + 1 }\)
• C) \(a _ { n } = 9 ( - 1 ) ^ { 2 n - 1 }\)
• D) \(a _ { n } = 9 ( - 1 ) ^ { n }\)

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Definitions:

Preoperative

Pertaining to the period or phase before a surgical operation, involving necessary preparations and assessments to ensure patient readiness for surgery.

Perioperative Nursing

Refers to the role of the operating room nurse during the preoperative, intraoperative, and postoperative phases of surgery.

Postanesthesia Care Unit

A specialized unit in a hospital where patients are closely monitored for recovery after undergoing anesthesia, before being transferred to a regular ward or discharged.

Surgery

Invasive medical procedures involving the cutting of a body, either for diagnosis, treatment, or repair of a problem area.