Posted by **alejandro** on Wednesday, August 22, 2012 at 5:30pm.

A sequence has a first term of 24 and every other term is one half of the previous term.

Find a recursive formula that defines this sequence.

The answer of this question is:

an=an-1*1/2

Somebody can help me and let me know why is 1/2 on the formula? please please!!!

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