# Arithmetic & Geometric Sequences

May 12th, 2015
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what are geometric sequences and arithmetic sequences? Arithmetic - this sequence is used for adding to get to the next term,

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Craig Arithmetic GeometricArithmetic &GeometricSequencesBy: Craig Pillaca & YairMoralesWhat are Geometric &Arithmetic Sequences? Arithmetic- this sequence is used for adding to getto the next term. Ex.1, 4, 7, 10, 13 Geometric- this sequence is used for multiplyingto get to the next term. Ex.2, 4, 8, 16, 32Arithmetic Sequence 10,15,20 You have ants 10 the first day 15 thenext 20 the next and so on in arithmeticsequence. You start with 10 ants An=10+(n-1)5 Sn=n/2(10+An)Geometric Sequence 50,200,800, You have 50 rabbits on week oneand the next week you have 200 the next weekyou have 800 and so on in geometric sequence. You start with 50 rabbits An=(50)(4^n-1) Sn=(50(4^n-1)/(4-1)Reflection The difficult part was putting it all into aPowerPoint such as putting in the subscripts andexponents. Be able to do it on paper so that you can see allthe equations more clearly. Yes, they help us learn and better remember thisinformation. That Arithmetic sequences are generally smallnumbers but geometric sequences generally uselarger numbers.

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