Posted by **Ellie** on Friday, October 23, 2009 at 12:04am.

Is this correct? Write an explicit and recursive formula: -5,-4,-3,-2,-1... explicit: -5N+1

recursive:An-1+1

- math please please! -
**Reiny**, Friday, October 23, 2009 at 8:27am
In the recursive, if you meant

A_{n} = A_{n-1} + 1 , you should have included, n > 1, A_{1} = -5

In the recursive notation, the initial value(s) has to be included or else you can't start the thing off.

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