Numerical Linear algebra Matlab: Hello, the question asks to get a matlab code from the pseudo code using a formula of an upper triangle.

Recall that if Ux = y, and U ? Mn(R) is upper-triangular, then xi = (uii)^-1*( yi - sum(uij*xj)) where the lower and upper limits of sum are j=i+1 and n respectively and where where i ? {1, . . . , n}. using this equation, write a MATLAB code in the spirit of the pseudo-code for row-oriented back substitution.

The pseudo code is: for i=1...n

for j=1,...,i-1 (not executed when i-1)

bi<--bi-gij*bj

if gij=0, set errorflag,exit

bi<--bi/gii