The only build-in functions you are allowed to use from MatLab are the following ones: zeros, size, sum, abs, length, clear, close, clc.

Create a user-defined MatLab function that implements the Gauss elimination method called Gauss_alt. The input arguments would matrix [a] and [b] from linear algebra ([a]*[x]=[b]) and the output [x]. If the input argument [b] is a row vector, the function should be able to transform it to a column vector. Use the augmented matrix for [ab] for all operations in the function. Solve the following set of equations by hand (explain the steps you are following): xy + 2x2 2xz = 9 2x, +3x2 + xz = 23 3x + 2x2 - 4x3 =11 Use the function Gauss_alt to validate your hand-calculated solution. (30%) + =