Least Square Methods x1 + x2 = 2 х1 - х3 %3D 5 х2 + x3 3 6 -x1 + x2 + 2x3 = 6 a) Prove that the system does not admit a solution. b) What type of system does the least square solution solve? Does it admit solutions? c) If the system from part 2 admits solutions, solve it.

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