ContentDesign:Introduction to Matrix Algebra

Objectives

After completing this tutorial you will be able to: present given data in a grid format as a matrix interprete a matrix according to the given context define the order of a matrix define (a) a row matrix (b) column matrix (c) identity(or unit) matrix (d) square matrix (e) null matrix (f) rectangular matrix add two matrices of the same order multiply a matrix by a scalar(a number) explain the requisites required to multiply two matrices multiply two matrices calculate the determinant of a 2x2 matrix calculate the inverse of a matrix solve simultaneous equations with 2 variables using matrices

Preknowledge

basic 4 operations solve simultaneous equations

Reading

Introduction When a large amount of numerical data has to be used frequently in the same order and format, we can arrange them conveniently in the form of a Matrix. Some situations where Matrices are used: when describing about - road networks. - communication networks. - power supply networks. - daily diatary(nutrient) requirements for chicken in a poultry farm. etc... We use matrices when solving real-world problems which are impossible to solve manually due to the very large amount of data involved with them. Matrices is a new topic which comes under 'Modern mathematics', introduced into school curriculum few decades ago.

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