{"common":{"save":0,"post_id":"8001","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8654","post_id":"8001","mon_id":"1159278","chapter_id":"1159330","question":"<p>Cho \u0111\u1ed3 th\u1ecb h&agrave;m s\u1ed1 y = f(x) = x&sup2; (P). T&igrave;m&nbsp;m&nbsp;sao cho B(m ; m&sup3;)&nbsp;thu\u1ed9c Parabol.<\/p>","options":["<strong>A.<\/strong> m = 0; m = 1","<strong>B.<\/strong> m = 0; m = &ndash;1","<strong>C.<\/strong> m = &ndash;1; m = 1","<strong>D.<\/strong> m = 1; m = 2"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong> m = 0;&nbsp; m = 1.<\/span><\/p><p>Thay x = m v&agrave; y = m&sup3; ta \u0111\u01b0\u1ee3c<\/p><p>m&sup3; = m&sup2;<\/p><p>m&sup3;&nbsp;&ndash; m&sup2; = 0<\/p><p>m&sup2; (m&nbsp;&ndash; 1) = 0<\/p><p>m&sup2; = 0 ho\u1eb7c m&nbsp;&ndash; 1 = 0<\/p><p>m = 0 ho\u1eb7c m = 1.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-17 10:40:28","option_type":"txt","len":2},{"id":"8655","post_id":"8001","mon_id":"1159278","chapter_id":"1159330","question":"<p>Cho h&agrave;m s\u1ed1 y = (2m&nbsp;&ndash; 1)x&sup2; (m l&agrave; tham s\u1ed1). T&igrave;m gi&aacute; tr\u1ecb c\u1ee7a m bi\u1ebft (x ; y)&nbsp;th\u1ecfa m&atilde;n&nbsp;<span class=\"math-tex\">$\\begin{cases}x-y=1\\\\2x-y=3\\end{cases}$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$m=-\\dfrac{5}{8}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$m=\\dfrac{5}{8}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$m=\\dfrac{8}{5}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$m=-\\dfrac{8}{5}$<\/span>"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$m=\\dfrac{5}{8}$<\/span>.<\/span><\/p><p>Tr\u1eeb t\u1eebng v\u1ebf c\u1ee7a h\u1ec7&nbsp;<span class=\"math-tex\">$\\begin{cases}x-y=1\\\\2x-y=3\\end{cases}$<\/span>&nbsp;ta \u0111\u01b0\u1ee3c x = 2, suy ra y = 1.<\/p><p>Thay x = 2, y = 1 v&agrave;o y = (2m&nbsp;&ndash; 1)x&sup2;, ta \u0111\u01b0\u1ee3c (2m&nbsp;&ndash; 1).4 = 1 suy ra&nbsp;<span style=\"color:#16a085;\"><span class=\"math-tex\">$m=\\dfrac{5}{8}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-17 10:45:00","option_type":"math","len":0},{"id":"8657","post_id":"8001","mon_id":"1159278","chapter_id":"1159330","question":"<p>Cho h&agrave;m s\u1ed1&nbsp;<span class=\"math-tex\">$y=\\dfrac{1}{4}x^2$<\/span>.&nbsp;X&aacute;c \u0111\u1ecbnh gi&aacute; tr\u1ecb c\u1ee7a tham s\u1ed1 m \u0111\u1ec3 \u0111i\u1ec3m <span class=\"math-tex\">$B(-\\sqrt{2};m)$<\/span>&nbsp;thu\u1ed9c \u0111\u1ed3 th\u1ecb&nbsp;h&agrave;m s\u1ed1.<\/p>","options":["<strong>A.<\/strong> m = 0","<strong>B.<\/strong> m = <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>","<strong>C.<\/strong> m = &ndash;1","<strong>D.<\/strong> m = 1"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> m =&nbsp;<span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>.<\/span><\/p><p>Thay x =&nbsp;<span class=\"math-tex\">$-\\sqrt{2}$<\/span>&nbsp;, y = m ta \u0111\u01b0\u1ee3c&nbsp;<span class=\"math-tex\">$m=\\dfrac{1}{4}.2$<\/span>&nbsp;suy ra m =&nbsp;<span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-17 10:48:26","option_type":"math","len":0}]}