inclass7-elimination

# inclass7-elimination

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3/15/2016 [1/4] Swapping Rows - In-class work: Elimination - RELATE 1/1 Swapping Rows Consider the matrix ( A ) Use the function (already implemented): def swap_rows(mat, i, j): temp = mat[i].copy() mat[i] = mat[j] mat[j] = temp to determine the factor (call this fac ) and the row-swapped matrix (sill A ) that you would use in the first elimination step. INPUT: A : a matrix as a numpy array swap_rows : a function to compute a row swap OUTPUT: A : a matrix with (potentially) swapped rows fac : the factor used to do the first row reduction A=2344812155

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3/15/2016 [2/4] Elimination Matrix - In-class work: Elimination - RELATE 1/1 Elimination Matrix Consider the matrix ( A ) Construct an elimination matrix for the first step (one entry). INPUT: A : a matrix as a numpy array OUTPUT: M : an elimination matrix for the first entry A=4812234155
3/15/2016 [3/4] Elimination matrices - In-class work: Elimination - RELATE

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