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Problem 1 Consider the matrix Problem 1 Consider the matriz a 2 5 3 11 08 a Find the cofactors C11,C2,C3 of A. b Find the det
[ 2 4 61 Problem 2 Consider the matriz A=008 | 2 5 3 a Use the eros to put A in upper triangular form 5 Pinul the determinan
Problem 3 Consider the matriz A = 2 [1 0 2 CSN and let matrix of cofactors of A be given by C = a Find the determinant of A,
Problem 4 Consider the following linear system. 21 +222 + 3.13 = 3 201 + 3x2 + 8.13 = 1 3x1 + 2x2 + x3 = 1 a Write the system
b Find the determinant of A, det(A) by keeping track of the row operations in part [aand the properties of determinant.
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