Determinant
Chapter Name : Determinants |
Sub Topic Code : 104_12_04_02_03 |
Topic Name : Determinant |
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Sub Topic Name : Determinant Of A Matrix Of Order 3 X 3 |
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Introduction
• Determinant of order 3 is the value associated with the corresponding matrix of order 3. • It has 9 element (may be a number or a variable). • Its value is the calculated by reducing it in terms of 2 x 2 determinant.
Pre-Requisites:
Matrix, System of linear equations, Basic number property, definition of determinants.
Real Life Question:
Can we find the volume of a cuboid by any simple method in coordinate geometry instead of applying the distance formulae?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
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| Determinant | A square array of numbers or variables enclosed between two vertical bars. |
Learning aids / Gadgets
| Gadgets | How it can be used |
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Real life uses :
Used to find the volume of a parallelepiped in coordinate geometry and has got a lot of application in vector algebra.
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
What is a determinant of matrix of order 3? How to find its value? How many elements are there?
What you learn in Practice:
An easy method to find the volume of a parallelepiped in coordinate geometry.