{"common":{"save":0,"post_id":"949","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"21","post_id":"949","mon_id":"0","chapter_id":"0","question":"Ch\u1ecdn k\u00ed hi\u1ec7u th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng","options":{"time":24,"part":[{"title":"Ch\u1ecdn k\u00ed hi\u1ec7u th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"M\u1ed7i k\u00ed t\u1ef1 ch\u1ec9 \u0111i\u1ec1n \u0111\u01b0\u1ee3c v\u00e0o m\u1ed9t \u00f4 tr\u1ed1ng","correct":[["$\\notin$"],["$\\in$"],["$\\subset$"]],"temp":"drop_blank","list":[{"point":5,"word":["$\\in$","$\\subset$","$\\notin$"],"ques":" \u0110i\u1ec1n k\u00ed hi\u1ec7u th\u00edch h\u1ee3p ($\\in; \\notin; \\subset$) v\u00e0o \u00f4 tr\u1ed1ng <br\/> <p>$2\\dfrac{1}{2}$ _dr_blank_ Z; $\\qquad -1,5 $_dr_blank_ Q; $\\qquad $ Z _dr_blank_ Q<\/p>","explain":" Ta c\u00f3: $2\\dfrac{1}{2} = \\dfrac{5}{2} \\notin Z ; $$\\qquad -1,5 = \\dfrac{-3}{2} \\in Q ;$$\\qquad Z \\subset Q$ <br\/> <span class='basic_pink'> V\u1eady c\u00e1c k\u00ed hi\u1ec7u ph\u1ea3i \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t l\u00e0 $\\notin; \\in; \\subset $<\/span> "}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:42"},{"id":"22","post_id":"949","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n d\u1ea5u (>; <; =) th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":9,"part":[{"title":"\u0110i\u1ec1n d\u1ea5u (>; <; =) th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng ","title_trans":"","temp":"fill_the_blank","correct":[[[">"]]],"list":[{"point":5,"width":50,"type_input":"","ques":" $\\dfrac{-7}{22} $_input_$ \\dfrac{-3}{8}$","hint":" So s\u00e1nh b\u1eafc c\u1ea7u v\u1edbi $\\dfrac{-7}{21} $ ; ","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span> <br\/> <b> So s\u00e1nh c\u00e1c s\u1ed1 h\u1eefu t\u1ec9<\/b> <br\/> $\\bullet$ D\u00f9ng t\u00ednh ch\u1ea5t b\u1eafc c\u1ea7u <\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> \\begin{align*} \\text{ Ta c\u00f3: } &\\dfrac{-7}{22} > \\dfrac{-7}{21} = \\dfrac{-1}{3} = \\dfrac{-3}{9} > \\dfrac{-3}{8} \\\\ &\\Rightarrow \\dfrac{-7}{22} > \\dfrac{-3}{8} \\end{align*} <br\/> <span class='basic_pink'> D\u1ea5u c\u1ea7n \u0111i\u1ec1n l\u00e0 ''>''. <\/span><\/span> "}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:42"},{"id":"23","post_id":"949","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Trong t\u1eadp c\u00e1c s\u1ed1 h\u1eefu t\u1ec9 $\\mathbb{Q},$ ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang? ","select":["A. M\u1ecdi s\u1ed1 h\u1eefu t\u1ec9 \u0111\u1ec1u l\u1edbn h\u01a1n 0.","B. M\u1ecdi s\u1ed1 h\u1eefu t\u1ec9 \u0111\u1ec1u nh\u1ecf h\u01a1n 0.","C. Ch\u1ec9 c\u00f3 s\u1ed1 h\u1eefu t\u1ec9 \u00e2m l\u00e0 nh\u1ecf h\u01a1n 0.","D. Ch\u1ec9 c\u00f3 s\u1ed1 0 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ed1 h\u1eefu t\u1ec9."],"hint":" S\u1ed1 h\u1eefu t\u1ec9 bao g\u1ed3m : s\u1ed1 h\u1eefu t\u1ec9 \u00e2m, s\u1ed1 0 v\u00e0 s\u1ed1 h\u1eefu t\u1ec9 d\u01b0\u01a1ng.","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span> <br\/> <b> S\u1ed1 h\u1eefu t\u1ec9 \u00e2m, d\u01b0\u01a1ng <\/b> <br\/> $ x > 0 \\Leftrightarrow x$ l\u00e0 s\u1ed1 h\u1eefu t\u1ec9 d\u01b0\u01a1ng <br\/> $ x < 0 \\Leftrightarrow x$ l\u00e0 s\u1ed1 h\u1eefu t\u1ec9 \u00e2m <br\/> S\u1ed1 h\u1eefu t\u1ec9 0 kh\u00f4ng l\u00e0 s\u1ed1 h\u1eefu t\u1ec9 d\u01b0\u01a1ng c\u0169ng kh\u00f4ng l\u00e0 s\u1ed1 h\u1eefu t\u1ec9 \u00e2m <\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ph\u00e1t bi\u1ec3u \u0111\u00fang l\u00e0: <br\/> C. Ch\u1ec9 c\u00f3 s\u1ed1 h\u1eefu t\u1ec9 \u00e2m l\u00e0 nh\u1ecf h\u01a1n 0. <br\/> <br\/> <span class='basic_pink'> \u0110\u00e1p \u00e1n \u0111\u00fang l\u00e0 C. <\/span><\/span> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:42"}]}