{"save":1,"level":1,"time":"90","total":34,"point":5,"segment":[{"id":"3977","test_id":"493","question":"<p>Cho&nbsp;<span class=\"math-tex\">$\\displaystyle\\int\\limits^1_0f(x)dx=2$<\/span>&nbsp;v&agrave;&nbsp;<span class=\"math-tex\">$\\displaystyle\\int\\limits^1_0g(x)dx=5$<\/span>. T&iacute;nh t&iacute;ch ph&acirc;n&nbsp;<span class=\"math-tex\">$\\displaystyle\\int\\limits_0^1[f(x)-g(x)]dx$<\/span><\/p>","options":["A. 10","B. &ndash;3","C. 3","D. 7"],"correct":"2","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;:&nbsp;<span style=\"color:#16a085;\"><strong>B. &ndash;3.<\/strong><\/span><\/p><p>Ta c&oacute;:&nbsp;<span class=\"math-tex\">$\\displaystyle\\int\\limits_0^1[f(x)-g(x)]dx$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$\\displaystyle\\int\\limits_0^1f(x)dx-\\int\\limits_0^1g(x)dx=2-5=-3$<\/span>.<\/p>","type":"choose","user_id":"126","test":"3","date":"2025-05-19 13:48:31"},{"id":"3978","test_id":"493","question":"<p>H\u1ecd nguy&ecirc;n h&agrave;m c\u1ee7a h&agrave;m s\u1ed1&nbsp;<span class=\"math-tex\">$y=2^x$<\/span>&nbsp;l&agrave;<\/p>","options":["<strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$2^x\\ln2+C$<\/span>","<strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$2^x+C$<\/span>","<strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{e^x}{\\ln2}+C$<\/span>","<strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{2^x}{\\ln2}+C$<\/span>"],"correct":"4","answer":"<p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;:&nbsp;<span style=\"color:#16a085;\"><strong>D.&nbsp;<span class=\"math-tex\">$\\dfrac{2^x}{\\ln2}+C$<\/span>.<\/strong><\/span><\/p><p>&Aacute;p d\u1ee5ng c&ocirc;ng th\u1ee9c&nbsp;<span class=\"math-tex\">$\\int a^xdx=\\dfrac{a^x}{\\ln a}+C$<\/span>, ta c&oacute;<\/p><p><span class=\"math-tex\">$\\int2^xdx=\\dfrac{2^x}{\\ln2}+C$<\/span>.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-05-19 13:51:09"}]}