[k 1 k-1] a) Let A = 0 2k k+1 k -1 k Use cofactor expansion...

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[k 1 k-1] a) Let A = 0 2k k+1 k -1 k Use cofactor expansion to determine which real values of k make A invertible. [1 2 3 b) Calculate the determinant of B= 2 -1 0 using row operations. 0 k [k 1 k-1] a) Let A = 0 2k k+1 k -1 k Use cofactor expansion to determine which real values of k make A invertible. [1 2 3 b) Calculate the determinant of B= 2 -1 0 using row operations. 0 k