1. Solving Simultaneous Equations using Matlab
By Prof. Johnson
Wentworth Institute of Technology
Department of Electrical Engineering and Technology
November 6th 2014

2. Start Matlab (after installing it)
Click on the application first
Starting up indicator

3. Opening screen for Matlab

4. Search for info on simultaneous equations

5. Click on…

6. Begin reading

7. Highlights…

8. Example:

9. How do we get the values into matrix A and b?

10. How do we get values into the ‘b’ vector
This answer was in the previous slide (1st line)
Type the letter b into Matlab at the prompt >>
Type =
Enter the square bracket [
Then enter the values separated by a space…and followed by a ]
b = [1, 4, 75]
But this is only 1 row. The matrix may have 3 rows so you need to TRANSPOSE the vector
Type: b = b’
This will turn the row vector into a column vector

11. Complete solution Pull the coefficients out of the loop equations
Enter them into the A matrix
Type A = [
Then start entering the values separated by a space.
At the end of a row, signify this using a semicolon ‘;’
After the last value is entered close the matrix with ]
Now type in x = b\A and the answer will be a column vector with the solutions.

12. Example* using something familiar…
← Circuit side
Math side →
*Example from