Mathematics, Data Science, Algebra, Numerical Analysis, University At Buffalo.
notation as aᵢⱼxⱼ = bᵢ. A and x must be compatible, which means that if the size of A is m x n and the size of x is p x 1, then A and B are compatible if and only if n = p. A matrix-vector product is a linear combination of the column vectors of the matrix. You can also get a row vector as a result