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+code created by Marti Bosch (marti.bosch@epfl.ch) and Marc Schwaerzel (marc.schwaerzel@epfl.ch)
+# Exercise 1
+# Exercise 2
+exercice 2.1: a good strategy to work both of us on different parts at the same is to define edit the "class Series" together and then do exercice 2 and 3 separately by using the mother/daughter classes as seen in the lecture.
+We thought about this strategy but it was not really conclusive as I (Marc Schwaerzel) started to  implement series as in the exercices of week 5. Finally we simplified things and came back to out initial strategy.
+
+# Exercise 3
+# Exercise 4
+# Exercise 5
+
+	
+