No calculator, method not answer please
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Divide both sides by 3 to obtain: Now take the square of both sides to get: We know that so . This gives: so (you can ofcourse save some steps: )
Last edited by Dinkydoe; Jan 7th 2010 at 10:20 AM.
Originally Posted by Dinkydoe Divide both sides by 3 to obtain: Now take the square of both sides to get: We know that so . This gives: so (you can ofcourse save some steps: ) How did you get 3=2(n-1) from
if this means that Since
Thanks for the formula I can add to my list!