Concept explainers
To find the first and fourth terms of the given geometric sequence.
Answer to Problem 35PPS
First term is 9 and fourth term is
Explanation of Solution
Given:
Concept used:
The nth term of a geometric sequence with first term ‘a’ and common ratio ‘r’ is
Calculation:
&
Now dividing equation (2) by equation (1), we get
Now put
Therefore first and fourth terms are
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