Order and types of matrices
Matrices and determinants (introductory) · Mathematics
Study notes
Q: Classify: A = [[1,2],[3,4]], B = [[1,0],[0,1]], C = [[5,0,0],[0,5,0]]. A: 2×2 square matrix. B: 2×2 identity matrix I₂. C: 2×3 rectangular; also scalar-like diagonal block (5·I pattern in first 2 cols).