Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2006 | January | Q#2
The sequence of positive numbers , , , … is given by:
a. Find , and .
b. Write down the value of .
We are given that (n+1)th term of arithmetic series is represented by;
Therefore, to find nth term we substitute (n-1) for n in the given expression.
From (a) it can be seen that arithmetic series is given as;
It can seen that all terms appears a 1 and 4 alternatively, specifically all odd terms will be 1 and all even terms will be 4.