CRAN: Package Matrix - The Comprehensive R Archive Network
A rich hierarchy of sparse and dense matrix classes, including general, symmetric, triangular, and diagonal matrices with numeric, logical, or pattern entries. Efficient methods for operating on such matrices, often wrapping the 'BLAS', 'LAPACK', and 'SuiteSparse' libraries.
Matrix Calculator - Symbolab
In math, a matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns. To add or subtract matrices, perform the corresponding operation on each element of the matrices. Note that in order to add or subtract matrices, the …
Matrix calculator
With help of this calculator you can: find the matrix determinant, the rank, raise the matrix to a power, find the sum and the multiplication of matrices, calculate the inverse matrix. Just type matrix elements and click the button.
Matrix Calculator
Multiplying two (or more) matrices is more involved than multiplying by a scalar. In order to multiply two matrices, the number of columns in the first matrix must match the number of rows in the second matrix. For example, you can multiply a 2 × 3 matrix by a 3 × 4 matrix, but not a 2 × 3 matrix by a 4 × 3. Can be multiplied:
Matrix Multiplication Calculator - Matrix Calculator - Reshish
Here you can perform matrix multiplication with complex numbers online for free. However matrices can be not only two-dimensional, but also one-dimensional (vectors), so that you can multiply vectors, vector by matrix and vice versa. After calculation you can multiply the result by another matrix right there! Have questions? Read the instructions.
Matrix (mathematics) - Wikipedia
In mathematics, a matrix (pl.: matrices) is a rectangular array or table of numbers, symbols, or expressions, with elements or entries arranged in rows and columns, which is used to represent a mathematical object or property of such an object. For example, is …
Matrix Calculator - Desmos
Matrix Calculator: A beautiful, free matrix calculator from Desmos.com.
Matrices - Wolfram|Alpha
Explore various properties of a given matrix. Calculate properties of a matrix: Calculate the trace or the sum of terms on the main diagonal of a matrix. Compute the trace of a matrix: Invert a square invertible matrix or find the pseudoinverse of a non-square matrix. Compute the inverse of a matrix: Find a pseudoinverse:
How to Multiply Matrices - Math is Fun
To multiply a matrix by a single number is easy: These are the calculations: We call the number ("2" in this case) a scalar, so this is called "scalar multiplication". But to multiply a matrix by another matrix we need to do the "dot product" of rows and columns ... what does that mean? Let us see with an example:
We represent the number of each model sold using a row matrix (4X1) and we use a 1X4 column matrix to represent the sales price of each model. When a 4X1 matrix is multiplied by a 1X4 matrix, the result is a 1X1 matrix of a single number. If the number of columns of A does not equal the number of rows of B, the matrix product AB is not defined.
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