1. Write a function that solves a linear system Ar-b via elimination and substitution function x – my_linsolve (A, b) where A is an n-by-n array and b and x are n-by-1 arrays. You may only use elementary row operations: Exchange/swap two rows . Add a nonzero multiple of one row to another row Scale a row by a nonzero Here, row’ means a row of the augmented matrix [A b] (i.e., a linear equation).
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