{"common":{"save":0,"post_id":"5806","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8449","post_id":"5806","mon_id":"1158532","chapter_id":"1158660","question":"<p>Bi\u1ec3u th\u1ee9c nào sau \u0111ây là \u0111\u01a1n th\u1ee9c m\u1ed9t bi\u1ebfn?<\/p>","options":["<strong>A.<\/strong> x + y","<strong>B. <\/strong>3x²","<strong>C. <\/strong>x² + y","<strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{1}{x}$<\/span>"],"correct":"2","level":"1","hint":"<p>\u0110\u01a1n th\u1ee9c m\u1ed9t bi\u1ebfn (g\u1ecdi t\u1eaft là \u0111\u01a1n th\u1ee9c) là bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 có <span style=\"color:#2980b9;\">d\u1ea1ng tích c\u1ee7a m\u1ed9t s\u1ed1 th\u1ef1c v\u1edbi m\u1ed9t l\u0169y th\u1eeba c\u1ee7a bi\u1ebfn<\/span>, trong \u0111ó s\u1ed1 th\u1ef1c g\u1ecdi là h\u1ec7 s\u1ed1, s\u1ed1 m\u0169 c\u1ee7a l\u0169y th\u1eeba c\u1ee7a bi\u1ebfn g\u1ecdi là b\u1eadc c\u1ee7a \u0111\u01a1n th\u1ee9c.<\/p>","answer":"<p>\u0110\u01a1n th\u1ee9c m\u1ed9t bi\u1ebfn là <span style=\"color:#16a085;\"><strong>B. <\/strong>3x²<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-31 02:01:38","option_type":"math","len":0},{"id":"8452","post_id":"5806","mon_id":"1158532","chapter_id":"1158660","question":"<p>Cho bi\u1ebft h\u1ec7 s\u1ed1 và b\u1eadc c\u1ee7a m\u1ed7i \u0111\u01a1n th\u1ee9c sau:<\/p>","options":[["<span class=\"math-tex\">$2x^5$<\/span> có","<span class=\"math-tex\">$-\\dfrac{1}{2}$<\/span> có","<span class=\"math-tex\">$4^2x$<\/span> có ","0 có"],["h\u1ec7 s\u1ed1 là <span class=\"math-tex\">$-\\dfrac{1}{2}$<\/span>, b\u1eadc là 0","h\u1ec7 s\u1ed1 là 16, b\u1eadc là 1","h\u1ec7 s\u1ed1 là 2, b\u1eadc là 5","h\u1ec7 s\u1ed1 là 0, không có b\u1eadc"],["h\u1ec7 s\u1ed1 là 2, b\u1eadc là 5","h\u1ec7 s\u1ed1 là <span class=\"math-tex\">$-\\dfrac{1}{2}$<\/span>, b\u1eadc là 0","h\u1ec7 s\u1ed1 là 16, b\u1eadc là 1","h\u1ec7 s\u1ed1 là 0, không có b\u1eadc"]],"correct":[1,2,0,3],"level":"1","hint":"<p>\u0110\u01a1n th\u1ee9c m\u1ed9t bi\u1ebfn (g\u1ecdi t\u1eaft là \u0111\u01a1n th\u1ee9c) là bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 có d\u1ea1ng tích c\u1ee7a m\u1ed9t s\u1ed1 th\u1ef1c v\u1edbi m\u1ed9t l\u0169y th\u1eeba c\u1ee7a bi\u1ebfn, trong \u0111ó <span style=\"color:#2980b9;\">s\u1ed1 th\u1ef1c g\u1ecdi là h\u1ec7 s\u1ed1<\/span>, <span style=\"color:#2980b9;\">s\u1ed1 m\u0169 c\u1ee7a l\u0169y th\u1eeba c\u1ee7a bi\u1ebfn g\u1ecdi là b\u1eadc c\u1ee7a \u0111\u01a1n th\u1ee9c<\/span>.<\/p><p>M\u1ed7i s\u1ed1 khác 0 là m\u1ed9t \u0111\u01a1n b\u1eadc 0.<\/p><p>S\u1ed1 0 là \u0111\u01a1n th\u1ee9c không có b\u1eadc.<\/p>","answer":"<p>\u0110áp án là<\/p><p><span style=\"color:#16a085;\"><span class=\"math-tex\">$2x^5$<\/span> có <\/span>→<span style=\"color:#16a085;\"> h\u1ec7 s\u1ed1 là 2, b\u1eadc là 5<\/span><\/p><p><span style=\"color:#16a085;\"><span class=\"math-tex\">$-\\dfrac{1}{2}$<\/span> có <\/span>→<span style=\"color:#16a085;\"> h\u1ec7 s\u1ed1 là <span class=\"math-tex\">$-\\dfrac{1}{2}$<\/span>, b\u1eadc là 0<\/span><\/p><p><span style=\"color:#16a085;\"><span class=\"math-tex\">$4^2x$<\/span> có <\/span>→<span style=\"color:#16a085;\"> h\u1ec7 s\u1ed1 là 16, b\u1eadc là 1 <\/span>(vì 4² = 16 nên h\u1ec7 s\u1ed1 là 16)<\/p><p><span style=\"color:#16a085;\">0 có <\/span>→<span style=\"color:#16a085;\"> h\u1ec7 s\u1ed1 là 0, không có b\u1eadc<\/span><\/p>","type":"matching","extra_type":"mat_txt","time":"0","user_id":"131","test":"1","date":"2022-05-31 02:09:38"},{"id":"8454","post_id":"5806","mon_id":"1158532","chapter_id":"1158660","question":"<p>Tính t\u1ed5ng c\u1ee7a hai \u0111\u01a1n th\u1ee9c sau:<\/p><p>3x³ + <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>x³<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{3}$<\/span>x","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{3}x^6$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{3}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{3}$<\/span>x³"],"correct":"4","level":"1","hint":"<p>\u0110\u1ec3 c\u1ed9ng hay tr\u1eeb hai \u0111\u01a1n th\u1ee9c m\u1ed9t bi\u1ebfn cùng b\u1eadc b\u1eb1ng cách c\u1ed9ng (hay tr\u1eeb) các h\u1ec7 s\u1ed1 v\u1edbi nhau và gi\u1eef nguyên l\u0169y th\u1eeba c\u1ee7a bi\u1ebfn.<\/p>","answer":"<p> 3x³ + <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>x³<\/p><p>= (3 + <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>) . x³<\/p><p>= <span class=\"math-tex\">$\\dfrac{10}{3}$<\/span>x³<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{3}$<\/span>x³<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-31 02:19:31","option_type":"math","len":0}]}