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a rectangular array of elements (or entries) set out by rows and columns
each piece of information in a matrix
A term used in matrix multiplication to describe a real number as opposed to a matrix
The product of a scalar and a matrix
An equation with matrices
The result when two matrices are multiplied
A matrix with only one column
A geometric shape that can be split into parts, each of which is a reduced-size copy of the whole
ad-bc; must be nonzero for an invertible matrix
A formula for solving a system of two linear equations using matrices
A matrix used to solve a system of linear equations with Cramer's rule, in which the elements of the matrices are the coefficients of the variables
diagonal matrix with ones in the leading diagonal and zeros in the other positions.
reciprocal of a number
The multiplicative inverse of a square matrix is called its inverse matrix.
A way to solve some real-life problems, involves maximizing or minimizing some function (such as profit or cost), where the variables defining the function are subject to some linear inequalities
Restrictions on one ore more variables in a problem
In linear programming, the function to optimize—that is, to maximize or minimize
To find the best solution to a linear programming problem. For example, to make the most profit or to find the solution with the least cost
The graph of possible solutions, or choices, in a linear programming problem