{"common":{"save":0,"post_id":"5652","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6881","post_id":"5652","mon_id":"1158532","chapter_id":"1158543","question":"<p>Trong các s\u1ed1 sau, s\u1ed1 nào là s\u1ed1 vô t\u1ec9 ?<\/p><div class=\"lt123_imgs\"><img class=\"img_dd tiny\" src=\"\/data\/library\/do-vat\/bongda.png\" \/><\/div>","options":["<span class=\"math-tex\">$\\sqrt{100}$<\/span>","<span class=\"math-tex\">$\\sqrt{99}$<\/span>","<span class=\"math-tex\">$-\\sqrt{16}$<\/span>"],"correct":"2","level":"1","hint":"<p>S\u1ed1 vô t\u1ec9 là s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng s\u1ed1 th\u1eadp phân vô h\u1ea1n không tu\u1ea7n hoàn.<\/p>","answer":"<p><span class=\"math-tex\">$\\sqrt{100}$<\/span> = 10 không là s\u1ed1 vô t\u1ec9<\/p><p><span class=\"math-tex\">$\\sqrt{99}$<\/span> = 9,949874371... là s\u1ed1 vô t\u1ec9 (vì vi\u1ebft \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng s\u1ed1 th\u1eadp phân vô h\u1ea1n không tu\u1ea7n hoàn)<\/p><p><span class=\"math-tex\">$-\\sqrt{16}$<\/span> = <span class=\"math-tex\">$-4$<\/span> không là s\u1ed1 vô t\u1ec9<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\sqrt{99}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-03 09:45:30","option_type":"math","len":0},{"id":"6882","post_id":"5652","mon_id":"1158532","chapter_id":"1158543","question":"<p>Trong các s\u1ed1 th\u1eadp phân sau, s\u1ed1 th\u1eadp phân nào là s\u1ed1 th\u1eadp phân vô h\u1ea1n tu\u1ea7n hoàn?<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hinh-cat-gap\/cathoa.png\" \/><\/div>","options":["3,0101","3,101","3,(01)","3,0(1)"],"correct":"[\"3\",\"4\"]","level":"1","hint":"","answer":"<p>Các s\u1ed1 th\u1eadp phân vô h\u1ea1n tu\u1ea7n hoàn là <span style=\"color:#16a085;\">3,(01)<\/span> và <span style=\"color:#16a085;\">3,0(1)<\/span><\/p>","type":"checkbox","extra_type":"cloud","time":"0","user_id":"131","test":"1","date":"2022-04-03 09:48:30","option_type":"txt","len":0},{"id":"6884","post_id":"5652","mon_id":"1158532","chapter_id":"1158543","question":"<p>Ch\u1ecdn câu kh\u1eb3ng \u0111\u1ecbnh \u0111úng.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hinh-cat-gap\/ngoi-sao2.png\" \/><\/div>","options":["<strong>A. <\/strong>T\u1eadp h\u1ee3p các s\u1ed1 th\u1ef1c \u0111\u01b0\u1ee3c kí hi\u1ec7u là <span class=\"math-tex\">$\\mathbb{R}$<\/span>","<strong>B.<\/strong> Các s\u1ed1 th\u1ef1c ch\u1ec9 bao g\u1ed3m các s\u1ed1 h\u1eefu t\u1ec9","<strong>C.<\/strong> S\u1ed1 vô t\u1ec9 là s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng s\u1ed1 th\u1eadp phân vô h\u1ea1n tu\u1ea7n hoàn."],"correct":"1","level":"1","hint":"","answer":"<p><strong>A. <\/strong>T\u1eadp h\u1ee3p các s\u1ed1 th\u1ef1c \u0111\u01b0\u1ee3c kí hi\u1ec7u là <span class=\"math-tex\">$\\mathbb{R}$<\/span>.<strong><span style=\"color:#16a085;\"> \u0110úng<\/span><\/strong><\/p><p><strong>B.<\/strong> Các s\u1ed1 th\u1ef1c ch\u1ec9 bao g\u1ed3m các s\u1ed1 h\u1eefu t\u1ec9. <span style=\"color:#e74c3c;\"><strong>Sai <\/strong><\/span>vì các s\u1ed1 th\u1ef1c bao g\u1ed3m các s\u1ed1 h\u1eefu t\u1ec9 và các s\u1ed1 vô t\u1ec9<\/p><p><strong>C.<\/strong> S\u1ed1 vô t\u1ec9 là s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng s\u1ed1 th\u1eadp phân vô h\u1ea1n tu\u1ea7n hoàn. <span style=\"color:#e74c3c;\"><strong>Sai <\/strong><\/span>vì s\u1ed1 vô t\u1ec9 là s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng s\u1ed1 th\u1eadp phân vô h\u1ea1n không tu\u1ea7n hoàn.<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>A. <\/strong>T\u1eadp h\u1ee3p các s\u1ed1 th\u1ef1c \u0111\u01b0\u1ee3c kí hi\u1ec7u là <span class=\"math-tex\">$\\mathbb{R}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-03 09:55:01","option_type":"math","len":0}]}