CAIE A Level Mathematics 9709 · Numerical solution of equations

Numerical solution of equations: calculation question

1 markStandard

The iteration $x_{n+1} = \sqrt{81}$ trivially, and more generally $x_{n+1} = \dfrac{81}{x_n}$ oscillates about $\sqrt{81}$ . State $\sqrt{81}$ .

(a)
State the value the process brackets.
[1]

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