{"common":{"save":0,"post_id":"6077","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5267","mon_id":"1158767","chapter_id":"1158774","post_id":"6077","question":"<p>Trong các c\u1eb7p s\u1ed1 sau, c\u1eb7p nào <strong>không <\/strong>là nghi\u1ec7m c\u1ee7a h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình <span class=\"math-tex\">$\\begin{cases} x+y-2\\le0\\\\2x-3y+2>0 \\end{cases}$<\/span><\/p>","options":["<strong>A.<\/strong> (0; 0)","<strong>B.<\/strong> (1; 1)","<strong>C.<\/strong> (–1; –1)","<strong>D.<\/strong> (–1; 1)"],"correct":"4","level":"1","hint":"","answer":"<p>L\u1ea7n l\u01b0\u1ee3t thay các c\u1eb7p s\u1ed1 vào h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình ta th\u1ea5y<\/p><p><strong>A.<\/strong> (0; 0) (thay x = 0, y = 0 th\u1ecfa mãn h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình)<\/p><p><strong>B.<\/strong> (1; 1) (thay x = 1, y = 1 th\u1ecfa mãn h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình)<\/p><p><strong>C.<\/strong> (–1; –1) (thay x = –1, y = –1 <span style=\"color:#e74c3c;\"> <\/span>th\u1ecfa mãn h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình)<\/p><p><strong>D.<\/strong> (–1; 1) (thay x = –1, y = 1 KHÔNG th\u1ecfa mãn h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình)<\/p><p>\u0110áp án c\u1ea7n ch\u1ecdn là <span style=\"color:#16a085;\"><strong>D.<\/strong> (–1; 1)<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2022-08-30 14:01:26","option_type":"txt","len":2},{"id":"5268","mon_id":"1158767","chapter_id":"1158774","post_id":"6077","question":"<p>\u0110i\u1ec3m nào sau \u0111ây <strong>không<\/strong> thu\u1ed9c mi\u1ec1n nghi\u1ec7m c\u1ee7a h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình <span class=\"math-tex\">$\\begin{cases} 2x+3y-1>0\\\\5x-y+4<0 \\end{cases}$<\/span> ?<\/p>","options":["<strong>A.<\/strong> (0; 0)","<strong>B.<\/strong> (–1; 4)","<strong>C.<\/strong> (–2; 4)","<strong>D.<\/strong> (–3; 4)"],"correct":"1","level":"1","hint":"","answer":"<p>V\u1edbi x = 0 và y = 0 ta có:<\/p><p><span class=\"math-tex\">$\\begin{cases} 2.0+3.0-1>0\\space(sai)\\\\5.0-0+4<0\\space(sai) \\end{cases}$<\/span><\/p><p>V\u1eady \u0111i\u1ec3m (0; 0) không thu\u1ed9c mi\u1ec1n nghi\u1ec7m c\u1ee7a h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình <span class=\"math-tex\">$\\begin{cases} 2x+3y-1>0\\\\5x-y+4<0 \\end{cases}$<\/span>.<\/p><p>\u0110áp án là <span style=\"color:#16a085;\"><strong>A.<\/strong> (0; 0)<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2022-08-30 14:04:37","option_type":"txt","len":2},{"id":"5270","mon_id":"1158767","chapter_id":"1158774","post_id":"6077","question":"<p>\u0110i\u1ec3m nào sau \u0111ây thu\u1ed9c mi\u1ec1n nghi\u1ec7m c\u1ee7a h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình <span class=\"math-tex\">$\\begin{cases} 2x-5y-1>0\\\\ 2x+y+5>0 \\\\ x+y+1<0 \\end{cases}$<\/span><\/p>","options":["<strong>A.<\/strong> (0; 0)","<strong>B.<\/strong> (1; 0)","<strong>C.<\/strong> (0; 2)","<strong>D.<\/strong> (0; –2)"],"correct":"4","level":"1","hint":"","answer":"<p>V\u1edbi x = 0 và y = –2 ta có:<\/p><p><span class=\"math-tex\">$\\begin{cases} 2.0-5.(-2)-1>0\\space (\u0111\u00fang)\\\\ 2.0+(-2)+5>0 \\space (\u0111\u00fang)\\\\ 0+(-2)+1<0 \\space (\u0111\u00fang) \\end{cases}$<\/span><\/p><p>V\u1eady \u0111i\u1ec3m (0; –2) thu\u1ed9c mi\u1ec1n nghi\u1ec7m c\u1ee7a h\u1ec7 b\u1ea5t ph\u01b0\u01a1ng trình <span class=\"math-tex\">$\\begin{cases} 2x-5y-1>0\\\\ 2x+y+5>0 \\\\ x+y+1<0 \\end{cases}$<\/span><\/p><p>\u0110áp án là <span style=\"color:#16a085;\"><strong>D.<\/strong> (0; –2)<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2022-08-30 14:13:09","option_type":"txt","len":2}]}