Multiplying Matrices. With an immediate use for it. Vocabulary. Identity Matrix: a diagonal matrix with 1 for every entry along the diagonal. Any time you multiply an identity matrix times another matrix, or another matrix times an identity matrix, you get the other matrix.

ByLesson 12.2. Matrix Multiplication. Row and Column Order. The rows in a matrix are usually indexed 1 to m from top to bottom. The columns are usually indexed 1 to n from left to right. Elements are indexed by row, then column. Scalar Multiplication of Matrices.

ByWarm-Up. Solve the following system:. Matrix Operations. Equal Matrices. Two matrices are considered equal if they have the same number of rows and columns (the same dimensions) AND all their corresponding elements are exactly the same. Identity Matrices.

ByMatrices. Outline. What is a matrix? Size of matrices Addition of matrices Scalar multiplication Matrices multiplication. What is a matrix?. A matrix is a collection of numbers represented in a tabular format (with rows and columns).

ByThe Health Matrix -DRGS. We Know…. Hospitals need to be cost effective They are usually non-profit & have to watch every penny One way to control cost is through DRG’s (Diagnostic Related Groups). DRG’s. Classifies a diagnosis into one payment group A limit is placed on the cost of care

ByLesson 13-4: Multiplying Matrices. Objectives: Students will: Find the product of a number and a matrix Find the product of two matrices Write a matrix equation. Multiplying by Scalar: Denoted kA Distribute “k” to every number in matrix Matrices:

By4.6 Cramer’s Rule. Using Determinants to solve systems of equations. A system of equations can be written as a matrix. 3x + 5y -2x + 7y becomes the matrix x – 6y + 3z 4y – 8z 5x – 3y becomes I will call this type of matrix an operation matrix.

ByMatrices. Outline. What is a matrix? Size of matrices Addition of matrices Scalar multiplication Matrices multiplication. What is a matrix?. A matrix is a collection of numbers represent in a tabular format (with rows and columns).

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