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October 20, 2014

October 20, 2014

Posted by **Anonymous** on Tuesday, September 25, 2012 at 10:30am.

- Maths - Geometric Progression -
**Steve**, Tuesday, September 25, 2012 at 11:40amar = 1/2

a/(1-r) = 4

a = 2-√2

r = 1/4 (2+√2)

or

a = 2+√2

r = 14 (2-√2)

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