I recieved this question and don't really know where to start with it, any help would be much appreciated..

"The formula 1 + r + r^2 +..r(n-1) = 1-n/1-r is true for what values of r?"

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- April 26th 2009, 10:28 AM14041471Geometric sequences?
I recieved this question and don't really know where to start with it, any help would be much appreciated..

"The formula 1 + r + r^2 +..r(n-1) = 1-n/1-r is true for what values of r?" - April 26th 2009, 10:50 AMstapel