1. Solving simultaneous equations
06/05/2019
Inverse of a Matrix
Solving simultaneous equations

2. Finding the Inverse of a 2x2 matrix
06/05/2019
Finding the Inverse of a 2x2 matrix
Step-1 First find what is called the Determinant
a1b2-a2b1
Step-2 Then swap the elements in the leading diagonal
Step-3 Then negate the other elements
Step-4 Then multiply the Matrix by 1/determinant

3. Example Find Inverse of A
06/05/2019
Example Find Inverse of A
Step 1 – Calc Determinant
Determinant (ad-cb) = 4x3-8x1 = 4
Step 2 – Swap Elements on leading diagonal
Step 3 – negate the other elements
Step 4 – multiply by 1/determinant

4. Find the inverses and check them
06/05/2019
Find the inverses and check them
inverse matrix

5. More inverses to find and check
06/05/2019
More inverses to find and check
inverse matrix