Tableau de variations-positivité I

Le tableau de variation de la fonction continue f entre 5 et 16 est le suivant :
La fonction f est-elle négative ou nulle sur [ 5,2] ?

Enter your reply:

Remark. Choose 'none of the above is correct', if you think that the correct choice is not among those presented.

This is exercise number 1 in a series of 6 exercises.
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