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General Mathematics: Units 1 and 2

Encoding and decoding information

Matrices

13:03 Lesson length
10 Chapters
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Matrices
About this lesson
Have you ever wanted to send encrypted messages but didn't know how?! Well, this video is going to show you how using the wonders of matrices. This video is another in the matrices series for the Units 1 and 2 General Maths series (VCE). I take a look at how we can use matrix multiplication to send encoded messages using a simple cypher and the mathematics we have been looking at before. This video builds on the previous video where we looked at the Identity and Inverse matrices and shows how we can use them (with the CAS) to encode and decode messages. Let the spy school training begin!
Lesson chapters
  1. Introduction
  2. Learning objectives
  3. Recap of past learning
  4. The cypher
  5. Example: Encoding a message
  6. Example: Decoding a message
  7. Back to the identity matrix
  8. Decoding the message
  9. The decoded message
  10. Summary
Legal (VCAA)

VCE Maths exam question content used by permission, ©VCAA. The VCAA is not affiliated with, and does not endorse, this video resource. VCE® is a registered trademark of the VCAA. Past VCE exams and related content can be accessed at www.vcaa.vic.edu.au

Video details
  • Title Encoding and decoding information
  • Section Matrices
  • Course General Mathematics: Units 1 and 2

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