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OpenStudy (1018):
This is a matrix problem. tr(2e^T-D). I solved it already but what does the 'tr' mean in the problem?
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ganeshie8 (ganeshie8):
`trace` is the sum of elements in principal diagonal
ganeshie8 (ganeshie8):
`a` b c d `e` f g h `i`
ganeshie8 (ganeshie8):
trace = `a` + `e` + `i`
OpenStudy (1018):
Yes. Thanks again mate!
ganeshie8 (ganeshie8):
yw :)
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