Topic: Finding Cofactors
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How do you find the cofactors of a matrix?
To find the cofactor of a matrix, you remove the row and column of the give... Read More »
Source: http://www.chacha.com/question/how-do-you-find-the-cofactors-of-a...
How to find the minors and cofactors of a matrix?
Minor 0f -5; remove row 1 and column 1; find the determinant -7 0 5 -8 = 56-0 = 56 M(1,1)=56 M(1,2) -- remove row 1 and column 2 -- find the determinant 4 0 6 -8 -32 -0 = -32 M(1,3) 4 -7 6 5 20-(-42) = 62 M(2,1) = 4 3 5 -8 -32 -15 = -47 M(2... Read More »
Source: http://answers.yahoo.com/question/index?qid=20120422184219AAvTXeh
How to find the inverse of a matrix using a matrix of cofactors?
the inverse is 1 over the determinant of matrix A(ie. 1/(determinant)) multiplied by the co-factor matrix. Read More »
Source: http://answers.yahoo.com/question/index?qid=20090511205152AA20iPs
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Finding Cofactors
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Minors are labeled according to the row and column you deleted. So if you were to go, say, to the a2,4 entry from some matrix A and cross out the row and column that pass through that entry (that is, if you remove the second row and the fou...
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Source: http://www.webanswers.com/education/homework-questions/how-to-fin...
A= (0 1 2) (1 3 0) (1 1 1) det(A) = 0*3*1 + 1*1*2 + 1*0*1 - ( 2*3*1 + 0*1*0 + 1*1*1) = 2 - 7 = - 5 Remember that if det(A) = 0, A^-1 doesn't exist! Acofactors: (3 0) - (1 0 ) + (1 3 ) ................ (1 1) ...(1 1)....(1 1 ) .................
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Source: http://ca.answers.yahoo.com/question/index?qid=20100717161346AAAg...
