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Question 1 sur 10 10:00

[{"id":74362,"question":"Quelle est la formule de la dérivée de la fonction f(x) = x² ?","option_a":"A) 2x","option_b":"B) x","option_c":"C) x²","option_d":"D) 1","option_e":"","option_f":"","bonne_reponse":"A","explication":"La dérivée de la fonction f(x) = x² est f'(x) = 2x, car la dérivée de x^n est n*x^(n-1).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74363,"question":"En algèbre, l'équation x² + 5x + 6 = 0 a pour solutions :","option_a":"A) x = 2 et x = 3","option_b":"B) x = -2 et x = -3","option_c":"C) x = 1 et x = 6","option_d":"D) x = -1 et x = -6","option_e":"","option_f":"","bonne_reponse":"B","explication":"Les solutions de l'équation x² + 5x + 6 = 0 sont x = -2 et x = -3, car (x+2)(x+3) = x² + 5x + 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74364,"question":"Vrai ou Faux ? La capitale de la Tunisie est Sfax.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Faux, la capitale de la Tunisie est Tunis.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74365,"question":"Quelle est la valeur de sin(30°) ?","option_a":"A) 1\/2","option_b":"B) √2\/2","option_c":"C) √3\/2","option_d":"D) 1","option_e":"","option_f":"","bonne_reponse":"A","explication":"La valeur de sin(30°) est 1\/2, car sin(30°) = cos(60°) = 1\/2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74366,"question":"Vrai ou Faux ? En biologie, la photosynthèse permet aux plantes de produire de l'oxygène.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Vrai, la photosynthèse permet aux plantes de produire de l'oxygène à partir de dioxyde de carbone et d'eau.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74367,"question":"Quelle est la formule chimique de l'eau ?","option_a":"A) CO₂","option_b":"B) H₂O","option_c":"C) O₂","option_d":"D) NaCl","option_e":"","option_f":"","bonne_reponse":"B","explication":"La formule chimique de l'eau est H₂O, composée de deux atomes d'hydrogène et d'un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74368,"question":"Vrai ou Faux ? En histoire, la révolution française a eu lieu en 1848.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Faux, la révolution française a eu lieu en 1789.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74369,"question":"Quelle est la capitale économique de la Tunisie ?","option_a":"A) Tunis","option_b":"B) Sfax","option_c":"C) Sousse","option_d":"D) Gabès","option_e":"","option_f":"","bonne_reponse":"C","explication":"La capitale économique de la Tunisie est Sousse, grâce à son port et son activité industrielle.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74370,"question":"Vrai ou Faux ? En mathématiques, la somme des angles d'un triangle est égale à 180°.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Vrai, la somme des angles d'un triangle est toujours égale à 180°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":74371,"question":"Quelle est la formule de l'aire d'un cercle de rayon r ?","option_a":"A) πr","option_b":"B) πr²","option_c":"C) 2πr","option_d":"D) 4πr²","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'aire d'un cercle de rayon r est donnée par la formule A = πr².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]