More information about the exam

1. You must detail your computations as much as possible. For instance, when setting  up and solving systems of equations, if you find rational coefficients and solutions write them using fractions. You can check of course that the solution you find is correct using matlab/mathematica. But if you just give me the solution provided by matlab/mathematica there will be a penalisation in the grade.

2. Compute numbers by hand as much as you possible. For the final number you can use the calculator.