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		   2 items are filed under this topic. 
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    3,6,10,15,and 21 | 
  2008-09-28 | 
   
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  From jarred: i am currently stumped on a math project that requires me to find out the recursive formula for a sequence of numbers.  the numbers in the sequence are 3,6,10,15,and 21.  Thank you for your time. Answered by Walter Whiteley. | 
   
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    A recursive formula for 9, -18, 36, -27, ... | 
  2008-06-05 | 
   
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  From Rita: I am having trouble understanding how to write formulas (I should say create formulas) from a given sequence. 
It does not matter what sort of sequence it is. The confusion remains. 
I have not found a textbook or easy math book that explains this process for the average Joe to grasp. 
Here are the two questions: 
  
(1) Write a recursive formula for the sequence 
 
9, -18, 36, -72, ... 
  
 
(2) Write a recursive formula for the sequence 
 
3, 3(sqrt{3}), 9, 9(sqrt{3}) Answered by Penny Nom. | 
   
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