Operation On Matrices
Chapter Name : Matrices |
Sub Topic Code : 104_12_03_04_05 |
Topic Name : Operation On Matrices |
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Sub Topic Name : Multiplication Of Matrices |
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Introduction
The product of two matrices A and B is defined if the number of columns of A is equal to the number of rows of B. It involves the multiplication of rows of A with columns of B.
Pre-Requisites:
Matrix types, Order of Matrix
Activity:
By multiplying the matrix of number of items bought by different individuals with the matrix of product prices, we can find total amount spent by each individual.
Real Life Question:
Can matrix multiplication be used to find the total cost of buying different products with different prices?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Order of matrix | The number of rows and columns in the matrix ; m (rows) x n (columns). |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Budget table | Observe how multiplication of matrices can be used to find the total amount spend by different individuals. |
Real life uses :
Finding revenue/costs from sales/expenses.
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 matrices.
What you learn in Practice:
To use matrix multiplication and calculate data.