Thread: Determine the number of vectors
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Old May 30th, 2009, 04:36 PM
math2009 math2009 is offline
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I mean to count quantity of possbile vectors
if k=1,then \sum _{i=1}^{n} {x_i} \geq 1. There are ( \begin{array}{ccc} n \\ 1 \end{array} ) 2^{n-1} vectors

I don't confirm whether to be right
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