Question

Give system of equation 2x-y+8z=13 3x+4y+5z=18 5x-2y+7z=20 by matrix inversion

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Answer 1

Answer:

Let A Given equations can be written as AX = B By matrix inversion method X = A-1B is the solution det A = 3(– 7 +16) – 4 (14 – 40) + 5 (– 4 + 5) = 27 + 104 + 5 = 136 The cofactors of elements of A are ∴ x = 3, y = 1, z = 1 is the solution.Read more on Sarthaks.com - https://www.sarthaks.com/533596/solve-3x-4y-5z-18-2x-y-8z-13-and-5x-2y-7z-20-by-using-the-matrix-inversion-method

Step-by-step explanation:

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