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OpenStudy (anonymous):
let a = 1 2 3 2 3 5 2 9 12 find cofactors c21, c22 and c23. find the determinant of A by cofactor expansion along second row
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myininaya (myininaya):
hmmm...I don't know what co-factors are, but I know how to find the determinant of this matrix...
myininaya (myininaya):
|dw:1331781707381:dw|
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