Write a rule for the nth term of the geometric term and then find a_6 given r=−1/2,a_3=8

erwachsenc6

erwachsenc6

Answered question

2022-10-17

Write a rule for the nth term of the geometric term and then find a 6 given r = - 1 2 , a 3 = 8

Answer & Explanation

cokeman206

cokeman206

Beginner2022-10-18Added 18 answers

Rule of finding n th term of G.P is a n = a 1 r n - 1 .where a 1 , r , n are 1st term, common ratio and required term respectively.
a 3 = 8 , r = - 1 2 , a 6 = ?
a 3 = a 1 ( - 1 2 ) 3 - 1 or 8 = a 1 ( - 1 2 ) 2 or 8 = a 1 1 4 or
a 1 = 32 ; a 6 = a 1 ( - 1 2 ) 6 - 1 or a 6 = 32 ( - 1 2 ) 5 or
a 6 = 32 ( - 1 32 ) = - 1
a 6 = - 1

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?