... = Y_i*B;numerator = C_i;new_X_i = X(i);second_new_X_i = X(i);if (n > 1)if (i > 1)numerator = numerator - G_i(1:i-1)*X(1:i-1);endif (i < n)numerator = numerator - G_i(i+1:n)*X(i+1:n);endenddenominator ... need to check the starting vector separately. Here is a setof commands to get you started:A = [infsup(1800,2200), -infsup(900,1100); -infsup(900,1100), infsup(1800,2200)]B = [10 ;-5 ]Y = 10ˆ (-4 ) ... G_i(i+1:n)*X(i+1:n);endenddenominator = G_i(i);numerator;denominator;if (˜in(0,denominator))there_are_2 = 0;new_X_i = numerator / denominator;elseif (˜in(0,numerator))there_are_2 = 1;supnum = sup(numerator);if(supnum...