Quiz — Analyse gnrl 2

Question 1 sur 5 10:00

[{"id":25469,"question":"Quelle est la dérivée de la fonction f(x) = x² + 3x - 5 ?","option_a":"f'(x) = 2x + 3","option_b":"f'(x) = x² + 3","option_c":"f'(x) = 2x - 5","option_d":"f'(x) = 3x + 2","option_e":"","option_f":"","bonne_reponse":"a","explication":"La dérivée d'une fonction polynôme s'obtient en appliquant la formule (ax^n)' = n·a·x^(n-1). Ici, f'(x) = 2x + 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"f'(x) = 2x + 3\", \"b\": \"f'(x) = x² + 3\", \"c\": \"f'(x) = 2x - 5\", \"","_debug_options_count":4},{"id":25470,"question":"Quel est le résultat de l'intégrale ∫(3x² + 2x) dx ?","option_a":"x³ + x² + C","option_b":"x³ + x + C","option_c":"3x³ + x² + C","option_d":"x³ + 2x + C","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'intégrale d'une somme est la somme des intégrales. ∫3x² dx = x³ et ∫2x dx = x², d'où le résultat x³ + x² + C.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"x³ + x² + C\", \"b\": \"x³ + x + C\", \"c\": \"3x³ + x² + C\", \"d\": \"","_debug_options_count":4},{"id":25471,"question":"Quelle est la limite de la suite uₙ = (n² + 1)\/n² lorsque n tend vers l'infini ?","option_a":"0","option_b":"1","option_c":"∞","option_d":"2","option_e":"","option_f":"","bonne_reponse":"b","explication":"En divisant numérateur et dénominateur par n², on obtient uₙ = 1 + 1\/n², dont la limite est 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\": \"0\", \"b\": \"1\", \"c\": \"∞\", \"d\": \"2\"}}","_debug_options_count":4},{"id":25472,"question":"Quelle est la solution de l'équation différentielle y' = 2y ?","option_a":"y = Ce^(2x)","option_b":"y = 2Ce^x","option_c":"y = Ce^x","option_d":"y = 2x + C","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'équation y' = ky a pour solution y = Ce^(kx). Ici, k=2, donc y = Ce^(2x).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"y = Ce^(2x)\", \"b\": \"y = 2Ce^x\", \"c\": \"y = Ce^x\", \"d\": \"y = 2x + C","_debug_options_count":4},{"id":25473,"question":"Quelle est la primitive de f(x) = e^(3x) ?","option_a":"(1\/3)e^(3x) + C","option_b":"e^(3x) + C","option_c":"3e^(3x) + C","option_d":"e^(x\/3) + C","option_e":"","option_f":"","bonne_reponse":"a","explication":"La primitive de e^(ax) est (1\/a)e^(ax) + C. Ici, a=3, donc la primitive est (1\/3)e^(3x) + C.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"(1\/3)e^(3x) + C\", \"b\": \"e^(3x) + C\", \"c\": \"3e^(3x) + C\", \"d\": \"e^","_debug_options_count":4}]