MATHEMATICS · Multi-part · A Level · Mathematics · Sequences and series · Sequences and series
Problem
Consider the sequence 12, 19, 26, 33, … .
(i) Define an arithmetic progression and its common difference.
(ii) Verify whether the given sequence is an arithmetic progression. If it is, write its common difference.
(iii) Obtain an expression for the general term an of this sequence and explain each step of your reasoning.