In this problem, you will study independently one new application of linear algebra. Possible applications are as follows; you could also come up with another application. Electric networks, Section 1.5 of Linear Algebra with Applications by W. Keith Nicholson. Input-Output Economic Models, Section 2.8 of Linear Algebra with Applica- tions by W. Keith Nicholson. Markov chains, Section 2.9 of Linear Algebra with Applications by W. Keith Nicholson. Computer graphics, Section 4.5 of Linear Algebra with Applications by W. Keith Nicholson. Best approximation and least squares, Section 5.6 of Linear Algebra with Applications by W. Keith Nicholson. (a) First you should concisely describe the application. Then you should give an example showing the application. The example should be different from the ones in the book; no marks will be given for the examples of the textbook.