IB skill practice

Use recurrence closed forms

Use a first-order recurrence closed form for repeated change.

Paper 1, Paper 2 5 marks Difficulty 3

Use recurrence closed forms - exam scenario

A regional clinic recurrence has closed form \(u_n=21(0.81)^n\). Find \(u_5\). Confirm the context meaning before entering the value. Enter the requested value and choose the interpretation that matches the result.

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