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Matrix Operations
★★★☆☆High School
📖Definition
Operations on matrices: addition, scalar multiplication, matrix multiplication.
📐Formulas
(A + B)_ij = A_ij + B_ij
Matrix addition (same dimensions)
(cA)_ij = c · A_ij
Scalar multiplication
(AB)_ij = ∑_k=1ⁿ A_ikB_kj
Matrix multiplication (A: m×n, B: n×p → AB: m×p)
✏️Examples
예제 1★★★☆☆
Find AB where A = [[1, 2], [3, 4]] and B = [[5, 6], [7, 8]].
⚡Applications
Computer Graphics
Composition of transformations
Neural Networks
Layer computations
🔗Related Documents
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