The first term of a sequence is 5 and each term is obtained by multiplying the…

MATHEMATICS · Multi-part · CBSE · Mathematics · Sequences and Series · Sequences and Series

Problem

The first term of a sequence is 5 and each term is obtained by multiplying the previous term by –2. (i) Write the general term

a_n

of the sequence in terms of

n

. (ii) Calculate the 8th term. (iii) Find the value of

\dfrac{a_{10}}{a_{7}}

and simplify your answer.