I have a lot of trouble trying to figure out the explcit forumla of a series of numbers.(adsbygoogle = window.adsbygoogle || []).push({});

I can see the pattern in a recursion forumla, however.

[tex] 2, -4, 8, -16, ...[/tex] Is a multiplication of [tex]-2[/tex] to the term before it. Which is cake to write in a recursion forumla. But what about an Explicit Formula?

What techniques and ideas do you look for first? Are there any clues?

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# Homework Help: Learning a technique to figuring out the Explicit Formula

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