second term
exampl 1
exampl 2
exampl 3
exampl 4
exampl 5
exampl 6
exampl 7
exampl 8
exampl 9
exampl 10
exampl 11
exampl 12
exampl 13



exampl 14
exampl 15 : with correction
exampl 16
exampl 17
exampl 18 2011/2012

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