{"common":{"save":0,"post_id":"6642","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6670","post_id":"6642","mon_id":"1158921","chapter_id":"1158933","question":"<p>\u0110i\u1ec3m nào có hoành \u0111\u1ed9 nh\u1ecf h\u01a1n 0?<\/p>","options":["<strong>A.<\/strong> (–1 ; –2)","<strong>B.<\/strong> (7 ; –2)","<strong>C.<\/strong> (0 ; 5)","<strong>D.<\/strong> (<span class=\"math-tex\">$\\dfrac{-3}{5}$<\/span> ; 0)"],"correct":"[\"1\",\"4\"]","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> (–1 ; –2)<\/span> và <span style=\"color:#16a085;\"><strong>D.<\/strong> (<span class=\"math-tex\">$\\dfrac{-3}{5}$<\/span> ; 1)<\/span><\/p>","type":"checkbox","extra_type":"classic-checkbox","time":"0","user_id":"131","test":"0","date":"2023-08-30 23:02:36","option_type":"math","len":0},{"id":"6672","post_id":"6642","mon_id":"1158921","chapter_id":"1158933","question":"<p>\u0110i\u1ec3m có t\u1ecda \u0111\u1ed9 nh\u01b0 th\u1ebf nào thì n\u1eb1m \u1edf góc ph\u1ea7n t\u01b0 th\u1ee9 II c\u1ee7a h\u1ec7 t\u1ecda \u0111\u1ed9?<\/p>","options":["<strong>A.<\/strong> \u0110i\u1ec3m có hoành \u0111\u1ed9 d\u01b0\u01a1ng và tung \u0111\u1ed9 âm.","<strong>B.<\/strong> \u0110i\u1ec3m có hoành \u0111\u1ed9 âm và tung \u0111\u1ed9 d\u01b0\u01a1ng.","<strong>C.<\/strong> \u0110i\u1ec3m có hoành \u0111\u1ed9 âm và tung \u0111\u1ed9 âm.","<strong>D.<\/strong> \u0110i\u1ec3m có hoành \u0111\u1ed9 d\u01b0\u01a1ng và tung \u0111\u1ed9 d\u01b0\u01a1ng."],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> \u0110i\u1ec3m có hoành \u0111\u1ed9 âm và tung \u0111\u1ed9 d\u01b0\u01a1ng.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-30 23:05:53","option_type":"txt","len":3},{"id":"6675","post_id":"6642","mon_id":"1158921","chapter_id":"1158933","question":"<p>Cho hàm s\u1ed1 <span class=\"math-tex\">$y=f(x)=4-x^2$<\/span>. V\u1edbi giá tr\u1ecb nào sau \u0111ây c\u1ee7a x thì hàm s\u1ed1 nh\u1eadn giá tr\u1ecb <strong>d\u01b0\u01a1ng<\/strong>?<\/p>","options":["<strong>A.<\/strong> x = 2","<strong>B.<\/strong> x = 4","<strong>C.<\/strong> x = 0","<strong>D.<\/strong> x = –5"],"correct":"3","level":"3","hint":"","answer":"<p><strong>A.<\/strong> x = 2 thì <span class=\"math-tex\">$f(2)=4-2^2=0$<\/span><\/p><p><strong>B.<\/strong> x = 4 thì <span class=\"math-tex\">$f(2)=4-4^2=-12$<\/span> < 0<\/p><p><strong>C.<\/strong> x = 0 thì <span class=\"math-tex\">$f(0)=4-0^2=4$<\/span> <strong><span style=\"color:#16a085;\">> 0<\/span><\/strong><\/p><p><strong>D.<\/strong> x = –5 thì <span class=\"math-tex\">$f(2)=4-(-5)^2=-21$<\/span> < 0<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> x = 0<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-08-30 23:09:43","option_type":"txt","len":1}]}
