SOLUTION: the first term of a geometric progression is 5 and the fifth term is 1280 and the common ratio is 4. Find out the expression of the nth term.? IS THE ANSWER OF THE NTH TE

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Question 1029216: the first term of a geometric progression is 5 and the fifth term is 1280 and the common ratio is 4.
Find out the expression of the nth term.?

IS THE ANSWER OF THE NTH TERM 4N+1?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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the first term of a geometric progression is 5 and the fifth term is 1280 and the common ratio is 4.
Find out the expression of the nth term.?

IS THE ANSWER OF THE NTH TERM 4N+1?
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The expression of the nth term of ANY geometric progression is

   a%5Bn%5D = a%5B1%5D%2Ar%5E%28n-1%29,

where a%5B1%5D is its first term and r is its common ratio.

In your case a%5B1%5D = 5  and  r = 4.

So, the expression of the nth term of YOURS geometric progression is

   a%5Bn%5D = 5%2A4%5E%28n-1%29.


IS THE ANSWER OF THE NTH TERM 4N+1? - NO.