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Find Determinants and Inverses for Two by Two and Three by Three Matrices
Worksheet
Grade Level
Pre-Calculus
Pre-CAL.142 Find Determinants and Inverses for Two by Two and Three by Three Matrices
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Let A = [[-1, 2, 1], [-2, -2, -1], [0, -3, -2]]. Select the matrix equal to A^-1.
A
A^-1 = [[-1/3, 4/3, -2], [-1/3, -2/3, 1], [0, 1, -2]]
B
A^-1 = [[-1/3, -1/3, 0], [4/3, -2/3, 1], [-2, 1, -2]]
C
A^-1 = [[1/3, 1/3, 0], [-4/3, 2/3, -1], [2, -1, 2]]
D
A^-1 = [[1, 1, 0], [-4, 2, -3], [6, -3, 6]]
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