Operation On Matrices
Chapter Name : Matrices |
Sub Topic Code : 104_12_03_04_02 |
Topic Name : Operation On Matrices |
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Sub Topic Name : Multiplication Of A Matrix By A Scalar |
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Introduction
If A is a matrix of given order and k is a scalar, then kA is another matrix which is obtained by multiplying each element of A by the scalar k.
Pre-Requisites:
A basic understanding of matrices.
Activity:
Multiplication of matrices by a scalar is a convenient way to find the total of a set of same matrices as compared to addition of the matrices.
Real Life Question:
How does multiplication of matrix with a scalar help in finding revised values for a distribution when changed given number of times?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Scalar | A numeric value |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Sets of same matrices in data records | Observe how total of a set of same matrices is found by using scalar multiplication. |
Real life uses :
To find revised quantities of revenue when sales is changed a given number of times.
Practical examples around us
| Examples | Explainations |
|---|---|
| Use in totaling | Handy to find total of groups with sub-divisions. |
What you learn in Theory:
How to multiply a matrix by a scalar.
What you learn in Practice:
To be able to quickly calculate the total value of a number of identical matrices.