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10 questions from this quiz
The identity matrix III
[1001]\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}[1001]
Square matrices only
ad−bcad - bcad−bc
When its determinant equals zero
777
Coefficients of variables
X=A−1×CX = A^{-1} \times CX=A−1×C
No, order matters in multiplication
Calculate A×BA \times BA×B and check if it equals III
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