Math Chapter Nine (Pre Calc Honors)
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Created by:
RMDTDancer on April 15, 2012
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11 terms
Terms | Definitions |
|---|---|
 What does an arithmetic sequence have? | A common diffrence wether posotive or negative Always adding (even if a negative number) |
| For finding "nth" term in Arithmetic sequnce formula is? | an=a1 + (n-1)d where d is the common diffrence |
| What is the senes formula for an arithmetic sequence? | Sn= n/2 * (a1/an) |
| What is a geometiric sequence | A sequence where the numbers are multiplied by the same thing every time |
| For findig the "nth term in a goemetric sequence formula is? | an= a1 * r^ (n-1) |
| What is the Sn formula for a geometric sequence? | Sn= a1 * [ (1- r^n) / (1-r) ] |
| What is the infinity S formua for goemetric sequence? | S infinity= a1/ (1-r); if IrI < 1 |
| What is step one | Show true for n=1 |
| What is step two | Assume true for n=k |
| What is step three | Show true for n= k+1 |
| What is step four | It has been shown to be true by inductice proofs |
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