Quiz — Devoir sur table - Programme de Terminale 4.pdf

Question 1 sur 10 20:00

[{"id":22689,"question":"Quelle est la dérivée de la fonction f(x) = 3x² + 2x - 5 ?","option_a":"A. f'(x) = 6x + 2","option_b":"B. f'(x) = 3x + 2","option_c":"C. f'(x) = 6x² + 2x","option_d":"D. f'(x) = 3x² + 2","option_e":"","option_f":"","bonne_reponse":"a","explication":"La dérivée d'une fonction polynomiale se calcule terme à terme : (3x²)' = 6x et (2x)' = 2, donc f'(x) = 6x + 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. f'(x) = 6x + 2\", \"b\": \"B. f'(x) = 3x + 2\", \"c\": \"C. f'(x) = 6x","_debug_options_count":4},{"id":22690,"question":"La fonction exponentielle est toujours positive sur ℝ.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La fonction exponentielle, notée exp(x) ou eˣ, est strictement positive pour tout réel x, car eˣ \u003E 0 quel que soit x.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":22691,"question":"Quelle est la solution de l'équation différentielle y' + 2y = 0 ?","option_a":"A. y = Ce^(2x)","option_b":"B. y = Ce^(-2x)","option_c":"C. y = 2Ce^x","option_d":"D. y = -2Ce^x","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'équation différentielle y' + 2y = 0 a pour solution générale y = Ce^(-2x), où C est une constante réelle.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. y = Ce^(2x)\", \"b\": \"B. y = Ce^(-2x)\", \"c\": \"C. y = 2Ce^x\", \"d\"","_debug_options_count":4},{"id":22692,"question":"Le produit scalaire de deux vecteurs orthogonaux est toujours égal à 0.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Par définition, deux vecteurs sont orthogonaux si et seulement si leur produit scalaire est nul.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":22693,"question":"Quelle est la limite de (sin x)\/x quand x tend vers 0 ?","option_a":"A. 0","option_b":"B. 1","option_c":"C. +∞","option_d":"D. -∞","option_e":"","option_f":"","bonne_reponse":"b","explication":"La limite de (sin x)\/x quand x tend vers 0 est un résultat fondamental en analyse : lim(x→0) (sin x)\/x = 1.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. 0\", \"b\": \"B. 1\", \"c\": \"C. +∞\", \"d\": \"D. -∞\"}}","_debug_options_count":4},{"id":22694,"question":"Un nombre complexe z est réel si et seulement si son argument est égal à 0.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un nombre complexe z est réel si et seulement si son argument est égal à 0 ou π (modulo 2π), mais pas uniquement 0.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":22695,"question":"Quelle est la valeur de l'intégrale ∫(1\/x) dx entre 1 et e ?","option_a":"A. 0","option_b":"B. 1","option_c":"C. e","option_d":"D. ln(e)","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'intégrale de 1\/x est ln|x|, donc ∫(1\/x) dx entre 1 et e vaut ln(e) - ln(1) = 1 - 0 = 1.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. 0\", \"b\": \"B. 1\", \"c\": \"C. e\", \"d\": \"D. ln(e)\"}}","_debug_options_count":4},{"id":22696,"question":"La suite (uₙ) définie par uₙ = (-1)ⁿ est convergente.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"La suite (uₙ) alterne entre -1 et 1, donc elle n'a pas de limite. Elle est donc divergente.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":22697,"question":"Quelle est la formule de l'aire d'un cercle de rayon r ?","option_a":"A. πr","option_b":"B. 2πr","option_c":"C. πr²","option_d":"D. 4πr²","option_e":"","option_f":"","bonne_reponse":"c","explication":"L'aire d'un cercle de rayon r est donnée par la formule A = πr², où π est la constante pi.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"A. πr\", \"b\": \"B. 2πr\", \"c\": \"C. πr²\", \"d\": \"D. 4πr²\"}}","_debug_options_count":4},{"id":22698,"question":"La fonction f(x) = x³ - 3x² + 2 est croissante sur l'intervalle [2, +∞[.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La dérivée de f(x) est f'(x) = 3x² - 6x. Pour x ≥ 2, f'(x) ≥ 0, donc f est croissante sur [2, +∞[.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]