Multiplication of Matrices. Let A and B be two matrices. Then, the multiplication of matrices A and B i.e. product of A and B is denoted by AB if it is defined. ... <看更多>

Convert yy to a vector by c() and it will be recycled to the dimension of xx when multiplying. xx * c(yy) # [,1] [,2] [,3] # [1,] 10 20 30 ... ... <看更多>

This short introduction will give you the intuition and Python/Numpy code behind matrices and vectors multiplication. Multiplying matrices ... ... <看更多>

The short answer is that a matrix corresponds to a linear transformation. To multiply two matrices is the same thing as composing the corresponding linear ... ... <看更多>