Matrix d3 using coeff as given in cramer 's rule
d3 = [ [ coeff [ 0 ] [ 0 ] , coeff [ 0 ] [ 1 ] , coeff [ 0 ] [ 3 ] ] , [ coeff [ 1 ] [ 0 ] , coeff [ 1 ] [ 1 ] , coeff [ 1 ] [ 3 ] ] , [ coeff [ 2 ] [ 0 ] , coeff [ 2 ] [ 1 ] , coeff [ 2 ] [ 3 ] ] ] NEW_LINE