1) Let A be nxn matrix and Ax=b, if we need change A to Uppertriangular matrix using Gaussian Elimination, how manyadditions/subtraction operations are involved? how manymultiplication/division operations are involved?
2) Once we got the upper triangular matrix, now we need to applyback-substitution, how many additions/subtraction operations areinvolved? how many multiplication/division operations areinvolved?
