Long description: zfig6

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Three graphs illustrate sequences of values for the terms \(u_{n-1}\), \(u_{n-2}\), and \(u_{n+1}\) plotted against the index \(n\).

Alt text: Three graphs illustrate sequences of values for the terms \(u_{n-1}\), \(u_{n-2}\), and \(u_{n+1}\) plotted against the index \(n\).

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  • The top graph plots the sequence \(u_{n-1}\) against \(n\), showing vertical lines of height one at \(n=0\), \(n=1\), and \(n=2\), with all other points at height zero.
  • The middle graph plots the sequence \(u_{n-2}\) against \(n\), showing vertical lines of height one at \(n=0\), \(n=1\), and \(n=2\), with all other points at height zero.
  • The bottom graph plots the sequence \(u_{n+1}\) against \(n\), showing vertical lines of height one at \(n=-1\), \(n=0\), and \(n=1\), with all other points at height zero.

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