Matlab Help Please

Consider the linear system X1 + 2 x2 + 2 X3 = 1 (5) 4x1 +5 x2 +6X3 = 2 (6) uX1 + 8x2 + 9x3 = 3 (7) where u is a parameter that could range between 0 and 10. It is not clear by looking at it, that this system will be difficult to solve. 1. Use a loop to find the solution for a range of values of u. Is there a value of u where things go wrong? The following syntax might be useful. mu=[0:0.1:10]; for ii=1: length(mu) % use mu(ii) and solve the system % etc end 2. Calculate the determinant and reciprocal condition number of the system matrix and relate this to the solution. (If necessary Google "Matlab determinant".) 3. Plot one of the solution values, e.g., X1 vs u. Choose a narrower range of u if this makes the graph clearer