1. Consider the system of equations 421 +172 823 = -307 1+ 422-42x3 = -73 -321-16x2 + 723 = 286 (a) Enter it into MATLAB as an (augmented) matrix named A. (b) Use elementary row operations (as in part 5 of the guide) to reduce it to row echelon form. (c) Continue using elementary row operations to get to reduced row echelon form. (d) *Give the solution of the system.

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Q: 17. Find the general solution of the system = 4 x

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