{"common":{"save":0,"post_id":"6497","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6939","mon_id":"1158767","chapter_id":"1158892","post_id":"6497","question":"<p>Cho hypebol x&sup2; &ndash; 3y&sup2; = 3. M\u1ec7nh \u0111\u1ec1 n&agrave;o <strong>sai <\/strong>trong c&aacute;c m\u1ec7nh \u0111\u1ec1 sau:<\/p>","options":["<strong>A.<\/strong> Gi&aacute; tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a hi\u1ec7u c&aacute;c kho\u1ea3ng c&aacute;ch t\u1eeb m\u1ed7i \u0111i\u1ec3m thu\u1ed9c hypebol \u0111\u1ebfn hai ti&ecirc;u \u0111i\u1ec3m b\u1eb1ng 2<span class=\"math-tex\">$\\sqrt{3}$<\/span> .","<strong>B.<\/strong> Ti&ecirc;u c\u1ef1 b\u1eb1ng 2.","<strong>C. <\/strong>Ti&ecirc;u c\u1ef1 b\u1eb1ng 4.","<strong>D.<\/strong> Hai ti&ecirc;u \u0111i\u1ec3m <span class=\"math-tex\">$F_1$<\/span>(&ndash;2; 0) v&agrave; <span class=\"math-tex\">$F_2$<\/span>(2; 0)."],"correct":"2","level":"3","hint":"","answer":"<p>x&sup2; &ndash; 3y&sup2; = 3&nbsp;&hArr;&nbsp;<span class=\"math-tex\">$\\dfrac{x^2}{3}-\\dfrac{y^2}{1}=1$<\/span>&nbsp;.<\/p><p>&rArr;&nbsp;<span class=\"math-tex\">$\\begin{cases}a^2=3\\\\b^2=1\\\\c^2=a^2+b^2=4\\end{cases}$<\/span>&rArr;&nbsp;<span class=\"math-tex\">$\\begin{cases}a=\\sqrt{3}\\\\b=1\\\\c=2\\end{cases}$<\/span>&nbsp;.<\/p><p>Ti&ecirc;u c\u1ef1 2c = 2 . 2 = 4. Do \u0111&oacute; c&acirc;u <strong>B <\/strong>sai.<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> Ti&ecirc;u c\u1ef1 b\u1eb1ng 2.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-05-30 10:11:16","option_type":"math","len":0},{"id":"6941","mon_id":"1158767","chapter_id":"1158892","post_id":"6497","question":"<p>Trong c&aacute;c ph\u01b0\u01a1ng tr&igrave;nh sau, ph\u01b0\u01a1ng tr&igrave;nh n&agrave;o l&agrave; ph\u01b0\u01a1ng tr&igrave;nh ch&iacute;nh t\u1eafc c\u1ee7a hypebol?<\/p>","options":["<strong>A.<\/strong> x&sup2; &ndash; 3y&sup2; = 3","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{x^2}{\\dfrac{1}{5}} - \\dfrac{y^2}{\\dfrac{1}{2}}=1$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{x^2}{64}-\\dfrac{y^2}{16}=-1$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{x^2}{8}-\\dfrac{y^2}{4}=-1$<\/span>"],"correct":"1","level":"3","hint":"","answer":"<p>x&sup2;&nbsp;&ndash; 3y&sup2; = 3&nbsp;&hArr;&nbsp;<span class=\"math-tex\">$\\dfrac{x^2}{3}-\\dfrac{y^2}{1}=1$<\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; <span style=\"color:#16a085;\">&nbsp;<strong>A.<\/strong> x&sup2;&nbsp;&ndash; 3y&sup2; = 3.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-05-30 10:17:09","option_type":"math","len":0},{"id":"6942","mon_id":"1158767","chapter_id":"1158892","post_id":"6497","question":"<p>D\u1ea1ng ch&iacute;nh t\u1eafc c\u1ee7a Parabol l&agrave;<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{x^2}{a^2}-\\dfrac{y^2}{b^2}=1$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{x^2}{a^2}+\\dfrac{y^2}{b^2}=1$<\/span>","<strong>C.<\/strong> y&sup2; = 2px, p &gt; 0","<strong>D.<\/strong> y = px&sup2;"],"correct":"3","level":"3","hint":"","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; <span style=\"color:#16a085;\">&nbsp;<strong>C.<\/strong> y&sup2; = 2px, p &gt; 0.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-05-30 10:19:46","option_type":"math","len":0}]}