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8 -3 -6 6. Let b = 30 and A = -11 22 . Use the following steps to solve the system Ax = b

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8 -3 -6 6. Let b = 30 and A = -11 22 . Use the following steps to solve the system Ax = b by using -48 14 32 the LU-decomposition of A. (a Find the LU-decomposition of A, A = LU. (b) Solve Ly = b by forward substition. (c) Solve Ux = y by back substition. (d) Find the solution of Ax = b

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