Complete calculerDerivee fixes #13
Complete calculerDeriveeOperationUnaire fixes #6
Complete calculerDeriveeOperationBinaire fixes #12
Complete calculerDeriveePlus fixes #7
Complete calculerDeriveeMoins fixes #8
Complete calculerDeriveeMul fixes #9
Nettoie les fonctions calculerDerivee deja completees
Complete calculerDeriveeDiv fixes #10
Complete calculerDeriveeCos fixes #2
Complete calculerDeriveeSin fixes #1
Complete calculerDeriveeExp fixes #5
Complete calculerDeriveeTan fixes #3
Corrige calculerDeriveeMul qui passe le test fixes #9
Corrige calculerDeriveeDiv qui passe le test fixes #10