\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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Which of the following recurrence relations defines an
arithmetic-geometric
sequence?
\(u_{n+1} = u_n + 5n\)
\(u_{n+1} = 0.5u_n - 3\)
\(u_{n+1} = u_n^2 + 1\)
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