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IB Mathematics HL – Arithmetic Series

How can I find the sum of the first 15 terms for the sequence defined by the following formula?

Thanks

How can I find the sum of the first 15 terms for the sequence defined by the following formula?

Thanks

- Max
**Posts:**0**Joined:**Mon Jan 28, 2013 8:06 pm

IB Mathematics HL – Arithmetic Series

This is an arithmetic sequence with common difference d = 8.

The first term is 6, common difference is d = 8, and n =15.

To find the sum of the first n terms, you will use the following formula for a

arithmetic series:

where

So

Hope these help!!

This is an arithmetic sequence with common difference d = 8.

The first term is 6, common difference is d = 8, and n =15.

To find the sum of the first n terms, you will use the following formula for a

arithmetic series:

where

So

Hope these help!!

- miranda
**Posts:**268**Joined:**Mon Jan 28, 2013 8:03 pm

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