
Matrices and matrix operations
Classroom exercises:
1) Working with arrays
Gilat, section 2.11
1
4
6
9
14
18
2) Matrices can be used to solve a set of simultaneous
equations. If you have a set of
equations, you can represent these in the form AX=B, where A is a matrix
of the
coefficients, X is your unknown variables and B is a vector of values on the
right hand
side of the equation. You can solve for x using: x=A\B (note the left division).
Look at
Gilat, sample problem 31, for how to get a set of simultaneous equations in
AX=B form.
Here is a section from Lay, D.C. “Linear Algebra and its Applications”:
What are A and b, and what is the result for x? Check the result using A*x.
3) Gilat, section 3.9
1
10
14
15
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