In this case the average and marginal costs are the same. Does this indicate constant returns to scale? == Matrix square root == I have read the Square root of a matrix article. I have a real square positive-definite but possibly non-symmetric matrix M, and I seek a (preferably real) matrix S such that transpose(S)*S=M (the * indicates matrix prod...

Found on http://en.wikipedia.org/wiki/David_Chomiak

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