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In this tutorial you will learn how to derive the inverse of a given 2 x 2 matrix. First of all, let me explain you the meaning of few more terms.
Unit value in the number system
In the number system we consider "1" as the unit value. The following are the properties of 1
- 1 x 7 = 7
- 6 x 1 = 6
- 1 x 8 = 8 x 1 = 8
- 2 x 1/2 = 2 x 2-1 = 1
- 1/2 x 2-1 = 1
In a similar manner, we can define a unit matrix.
What is a Unit Matrix?
- If A is any matrix and I is the unit matrix of the same order, then
A x I = I x A = A
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