D3: Matrices

Matrices (PDF*495kb)
Introduction  p. 263 
Matrix representation of data   p. 263 
Addition and subtraction of matrices  p. 267 
Multiplication of a matrix by a scalar  p. 270 
Multiplication of a matrix by a vector  p. 270 
Multiplication of two matrices   p. 273 
Special matrices  p. 277
Linear equations in matrix form  p. 280
Solution of a system of linear equations by row reduction p. 283
Solution of linear equations using the inverse of the coefficient matrix p. 291
Inverse matrices  p. 291
Determinant of a square matrix  p. 296
Solutions to exercise sets  p. 299