内容来自于机器学习课程
Matrices And Vectors
Matrix: Rectangular array of numbers
Vector: An n x 1 matrix
Addition and Scalar Multiplication
scalar : real number
Matrix Vector Multiplication
Matrix-Matrix Multiplication
Matrix Multiplication Properties
Inverse and transpose
逆矩阵
没有逆矩阵的矩阵是奇异矩阵或者退化矩阵