Exercice IV:

1. Corrigé:

   
   
   
   
   
   
   
   

2. Corrigé:

   
   
   
   
   
   
   
   

3. Corrigé:

   
   
   
   
   
   
   
   

4. Corrigé:

   
   
   
   
   
   
   
   

5. Corrigé:

   
   
   
   
   
   
   
   

6. Corrigé:

   
   
   
   
   
   
   
   

7. Corrigé:

   
   
   
   
   
   
   
   

8. Corrigé:

   
   
   
   
   
   
   
   

Exercice V:

1. Corrigé:

   
   
   
   
   
   
   

2.