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help please-need help -immediately-very imp!!

0 votes

help please.

 

classify as arithmetic, geometric, or neither. Finally find an explicit formula (rule for the nth term) for each. Designate the first term with n = 1.

e. 1, 4, 9, 16, 25, 36, ...

asked Jan 29, 2015 in PRECALCULUS by anonymous

2 Answers

0 votes

(d)

Step 1:

The series image

A geometric series is a series with a constant ratio between successive terms.

The series is geometric series.

Common ratio image

image

Formula for the image term in geometric series image.

Where image first term.

image

Step 2:

For image

image

image

Apply the exponent formula image.

image

Solution:

image term image .

answered Jan 30, 2015 by david Expert
edited Jan 30, 2015 by david
0 votes

(e)

Step 1:

The series image

Above series is neither arithmetic nor geometric.

The pattern of the series is square of the numbers.

image term of above series is image

Step 2:

For image

image

image

Solution:

image term image  .

answered Jan 30, 2015 by david Expert
edited Jan 30, 2015 by david

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