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Find Formula (Posted on 2012-02-17) Difficulty: 3 of 5
Derive a formula for the product of the first n members of an arithmetic progression with an initial element a and a common difference d;(a*d>0).
Verify the validity of your expression for (a,d,n)=(2,3,8).

See The Solution Submitted by Ady TZIDON    
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Solution OFFICIAL SOLUTION ...SPOILER Comment 4 of 4 |

From the web: http://en.wikipedia.org/wiki/Arithmetic_progression#Product

The product of the members of a finite arithmetic progression with an initial element a1, common differences d, and n elements in total is determined in a closed expression  ETC

Edited on April 21, 2012, 3:51 am
  Posted by Ady TZIDON on 2012-04-21 03:45:32

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