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arithmetic and geometric sequences

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Junior | Next Rank: 30 Posts
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arithmetic and geometric sequences

by cloodle » Tue Oct 07, 2008 1:12 pm
Hey guys,

Do you really need to know by heart the formulas for nth number and sum for arithmetic and geometric sequences? or will you be given the formula if you're expected to use it?

What would you recommend?

Thanks!
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by gabriel » Tue Oct 07, 2008 2:49 pm
Yes you would need to know them by heart and they really are not that hard to remember.
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