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onsider the following linear system 3 x + 2 y 4 z w = 9 7 x 3 y 5 z + 2 w =

onsider the following linear system
3x+2y4zw=9
7x3y5z+2w=6
x+y+z+w=10
2xy+5z3w=3
a) Solve the system using Matlab/Octave rref, backslash, and the inverse commands. Call the solution X.[3] b) Compute the spectral radius of the coefficient matrix. [2] c) Use the 2-norm to Compute the condition number of the coefficient matrix. What the number tells you about the matrix. [2] d) Use Matlab/Octave code to solve the system using the Jacobi method starting with initial value X
(0)
=(0.5,0.5,0.5,0.5,0.5). Call the solution XJ. Print 10 iterations. [4] e) Use Matlab/Octave code to solve the system using the Gauss-Seidel method starting with initial value X
(0)
=(0.5,0.5,0.5,0.5,0.5). Call the solution XGS. Print 10 iterations. [4] f) Use Matiab/Octave code to compute the \| XXJ\|
2
and \| XXGS\|
2
for the errors in the approximation. [3] g) Are the two numerical methods converging to the solution? Which method is better to use. Justify your answer. [2]

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