Mathematics - Linear Algebra - Determinants - Calculate Determinants

10 problems: (1-3) 2×2 determinants: det[[5,3],[2,4]], det[[1,-2],[3,6]], det[[2,4],[1,2]] (this one is 0!). (4-5) 3×3 determinants by cofactor expansion. (6) 'For what value of k is [[1,k],[2,6]] singular?' (k=3, making det=0). (7) Use det to determine if a system has unique solution. (8) Find inve