Correction in Mandatory Assignment 2, Exercise 2.a

What looked as exercise 2.a was erroneously formatted so that it seemed to be the first question of four in Exercise 2. However, that paragraph was in fact meant as the last one of the introduction, and this is now corrected. The three intended questions are now numbered 1), 2) and 3).  You may also refer to them as 2.b), 2.c) and 2.d).