Posted by **alejandro** on Thursday, August 23, 2012 at 5:34pm.

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!!!

I am not sure if the formula is the right one!!

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