Hello everyone, in today's video we will learn how to find
inverse of 2x2.
Everyone knows the formula of inverse.
Adjoint divided by determinant.
You can find determinant easily.
That is 3x2-1x-4
That is 6 plus 4 is equal to 10.
10 is the determinant.
Now you have to find adjoint.
How to find adjoint?
Interchange the entries on the main diagonal.
This will be 2 and 3.
And the entries on the off diagonal like minus 4 and 1.
Opposite the sign.
Minus 1 will be opposite 4 and 1 will be opposite minus 1.
This will be your adjoint.
Divide adjoint by determinant.
This will be your inverse matrix.
This was the shortcut to find inverse of 2x2 matrix.
Thank you.
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