Sequences and series

Topic practice · Paper 1 · Foundation

This free ExamAlly page is a TMUA sequences and series practice question for students preparing for the TMUA (Test of Mathematics for University Admission). Use it to check your understanding of Sequences and series, attempt every option under light time pressure, then read the full worked solution.

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A sequence $(u_n)$ is defined by $u_1=2$ and $u_{n+1}-u_n=3n+1$ for $n \ge 1$ . Which formula for $u_n$ is correct for all $n \ge 1$ ?

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