A sequence is defined by .

MATHEMATICS · Multi-part · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

A sequence is defined by un=3n−2u_n = 3n - 2 . (1) By finding un+1−unu_{n+1} - u_n , prove that the sequence is arithmetic. (2) Find u1u_1 and dd . (3) Find the 57th term. (4) What is the largest term of the sequence that is smaller than 450? Which term is this?

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