{"save":1,"level":1,"time":"45","total":20,"point":5,"segment":[{"id":"388","test_id":"248","question":"<p>Cho s\u1ed1 th\u1ef1c a, b d\u01b0\u01a1ng v\u1edbi a <span class=\"math-tex\">$\\ne $<\/span> 1, <span class=\"math-tex\">${{\\log }_{a}}b&gt;0$<\/span>. Kh\u1eb3ng \u0111\u1ecbnh \u0111&uacute;ng?<\/p>","options":["<span class=\"math-tex\">$\\left[\\begin{array}{l}{0 < a, b<1} \\\\ {0 < a < 1 < b}\\end{array}\\right.$<\/span>","<span class=\"math-tex\">$\\left[\\begin{array}{l}{0 < a, b<1} \\\\ {1 < a,b}\\end{array}\\right.$<\/span>","<span class=\"math-tex\">$\\left[\\begin{array}{l}{0 < b < 1 < a} \\\\ {1 < a,b}\\end{array}\\right.$<\/span>","<span class=\"math-tex\">$\\left[\\begin{array}{l}{0 < b, a<1} \\\\ {0 < b < 1 < a}\\end{array}\\right.$<\/span>"],"correct":"2","answer":"<p>T&iacute;nh ch\u1ea5t c\u1ee7a h&agrave;m logarit<\/p><p><span class=\"math-tex\">${{\\log }_{a}}b&gt;0$<\/span>&nbsp;<span class=\"math-tex\">$\\Leftrightarrow\\left[\\begin{array}{l}{ \\begin{cases} 0 < a <1 \\\\ 0 < b <1 \\end{cases}} \\\\ {\\begin{cases} a >1 \\\\ b > 1 \\end{cases}}\\end{array}\\right.$<\/span>&nbsp;<span class=\"math-tex\">$\\Leftrightarrow\\left[\\begin{array}{l}{0 < a, b<1} \\\\ {1 < a,b}\\end{array}\\right.$<\/span><\/p><p>&nbsp;<\/p>","type":"choose","user_id":"81","test":"2","date":"2020-03-17 15:20:19"},{"id":"389","test_id":"248","question":"<p>T\u1eadp x&aacute;c \u0111\u1ecbnh c\u1ee7a <span class=\"math-tex\">$y={{(x-1)}^{\\frac{1}{5}}}$<\/span><br \/>&nbsp;<\/p>","options":["<span class=\"math-tex\">$\\left( 0;+\\infty \u00a0\\right)$<\/span>","<span class=\"math-tex\">$\\left[ 1;+\\infty \u00a0\\right)$<\/span>","<span class=\"math-tex\">$\\left( 1;+\\infty \u00a0\\right)$<\/span>","R"],"correct":"3","answer":"<p><span class=\"math-tex\">$x-1>0$<\/span>&nbsp;<span class=\"math-tex\">$\\Leftrightarrow$<\/span>&nbsp;<span class=\"math-tex\">$x>1$<\/span><\/p>","type":"choose","user_id":"108","test":"0","date":"2020-03-17 15:25:47"}]}