rowCofactors | R Documentation |
Returns the vector of cofactors of row i of the square matrix A. The determinant, Det(A)
,
can then be found as M[i,] %*% rowCofactors(M,i)
for any row, i.
rowCofactors(A, i)
A |
a square matrix |
i |
row index |
a vector of the cofactors of A[i,]
Michael Friendly
Det
for the determinant
Other determinants:
Det()
,
adjoint()
,
cofactor()
,
minor()
,
rowMinors()
M <- matrix(c(4, -12, -4, 2, 1, 3, -1, -3, 2), 3, 3, byrow=TRUE) minor(M, 1, 1) minor(M, 1, 2) minor(M, 1, 3) rowCofactors(M, 1) Det(M) # expansion by cofactors of row 1 M[1,] %*% rowCofactors(M,1)
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