Types, operations, transpose, adjoint, inverse, system of linear equations.
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Q1 · Matrices · MEDIUM
If A = [1 2; 3 4], then the determinant of A is:
Q2 · Matrices · EASY
If A = [2 3; 4 5] and B = [1 0; 0 1], then A + B equals:
Q3 · Matrices · HARD
If A is a 3×3 matrix with det(A) = 4, then det(3A) equals:
Q4 · Matrices · MEDIUM
The inverse of the matrix [2 0; 0 3] is: