Question: 4 . 1 7 Use Gaussian elimination or LU decomposition ( without and with pivoting ) for: A = np . array ( [ 4

4.17 Use Gaussian elimination or LU decomposition (without and with pivoting) for:
A = np.array([4.,4,8,4,4,5,3,7,8,\
3,9,9,4,7,9,5]).reshape(4,4)
bs = np.array([1.,2,3,4])
Does pivoting help in any way? What are your conclusions about this matrix? You
sometimes hear the advice that, since the problem arises from one of the Uiis being
zero, you should replace it with a small number, say 1020. Does this work? by python coding

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