Asked by Toby
The fifth term of an exponential sequence is greater than the fourth term by 13.5 and the fourth term is greater than the third term by 9. Find the
1. Common ratio
2. First term
1. Common ratio
2. First term
Answers
Answered by
oobleck
Just use your GP formulae:
ar^4 = ar^3 + 13.5
ar^3 = ar^2 + 9
Now just solve for a and r
ar^4 = ar^3 + 13.5
ar^3 = ar^2 + 9
Now just solve for a and r
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