How to multiply a matrix by a column vector in Wolfram Alpha?
https://math.stackexchange.com/questions/3353841/how-to-multiply-a...12.09.2019 · 1 Answer Active Oldest Votes 0 The matrix example page at WolframAlpha has a matrix-vector product example. Basically, you remove the inner sets of curly brackets, and you give it an explicit multiplication symbol, and you get a result: { {a,0,0,0}, {0,b,0,0}, {0,0,c,d}, {0,0,e,0}}* {x/a,y/b,p,q}
Matrix Multiplication -- from Wolfram MathWorld
mathworld.wolfram.com › MatrixMultiplicationJan 19, 2022 · Matrix Multiplication. Download Wolfram Notebook. The product of two matrices and is defined as. (1) where is summed over for all possible values of and and the notation above uses the Einstein summation convention. The implied summation over repeated indices without the presence of an explicit sum sign is called Einstein summation, and is commonly used in both matrix and tensor analysis.
How to multiply a matrix by a column vector in Wolfram Alpha ...
math.stackexchange.com › questions › 3353841Sep 12, 2019 · 1 Answer Active Oldest Votes 0 The matrix example page at WolframAlpha has a matrix-vector product example. Basically, you remove the inner sets of curly brackets, and you give it an explicit multiplication symbol, and you get a result: { {a,0,0,0}, {0,b,0,0}, {0,0,c,d}, {0,0,e,0}}* {x/a,y/b,p,q}