Objectives: Write Matlab code to define a scalar, vector, or matrix. Determine the best way to index an array or matrix in Matlab. Given an array and index you should be able to describe the output. Given a desired output you should be able to determine the best index notation. Find the maximum or minimum of a vector or matrix along with the location.

Write the MATLAB commands to make a matrix $"$A$"$ where the first row is $10,20,30,$ the second row is $40,50,60,$ and the third row is $70,80,90.$ Then write the MATLAB command to change the values of the second column to the value $10.$

Determine the location of the maximium value of the matrix $("$M$"),$ and the row and column location of the max value $("$x$"$ and $"$y$").$