{"save":1,"level":1,"time":"45","total":20,"point":5,"segment":[{"id":"108","test_id":"200","question":"<p>C&oacute; bao nhi&ecirc;u ph&eacute;p t\u1ecbnh ti\u1ebfn bi\u1ebfn h&igrave;nh vu&ocirc;ng th&agrave;nh ch&iacute;nh n&oacute;<\/p>","options":["A. Kh&ocirc;ng c&oacute;","B. M\u1ed9t","C. B\u1ed1n","D. V&ocirc; s\u1ed1"],"correct":"2","answer":"<p>Ch\u1ec9 c&oacute; m\u1ed9t ph&eacute;p t\u1ecbnh ti\u1ebfn duy nh\u1ea5t theo vector&nbsp;<span class=\"math-tex\">$\\overrightarrow 0$<\/span>&nbsp;bi\u1ebfn 1 h&igrave;nh vu&ocirc;ng th&agrave;nh ch&iacute;nh n&oacute;<\/p>","type":"choose","user_id":"88","test":"0","date":"2020-03-10 23:29:29"},{"id":"109","test_id":"200","question":"<p>Trong m\u1eb7t ph\u1eb3ng&nbsp;<span class=\"math-tex\">$Oxy$<\/span>, ph&eacute;p t\u1ecbnh ti\u1ebfn theo vector&nbsp;<span class=\"math-tex\">$\\overrightarrow v=(1;3)$<\/span>&nbsp;bi\u1ebfn \u0111i\u1ec3m&nbsp;<span class=\"math-tex\">$A(2;1)$<\/span>&nbsp;th&agrave;nh \u0111i\u1ec3m n&agrave;o trong c&aacute;c \u0111i\u1ec3m sau<\/p>","options":["A.&nbsp;<span class=\"math-tex\">$A_1(2;1)$<\/span>","B.&nbsp;<span class=\"math-tex\">$A_2(1;3)$<\/span>","C.&nbsp;<span class=\"math-tex\">$A_3(3;4)$<\/span>","D.&nbsp;<span class=\"math-tex\">$A_4(-3;-4)$<\/span>"],"correct":"3","answer":"<p>G\u1ecdi&nbsp;<span class=\"math-tex\">$A^{\\prime}(x^{\\prime};y^{\\prime}) = {T_{\\overrightarrow v }}(A)$<\/span><\/p><p>Khi \u0111&oacute;:<\/p><p><span class=\"math-tex\">$\\left\\{ \\begin{array}{l} x^{\\prime} = x + a\\\\ y^{\\prime} = y + a \\end{array} \\right.$<\/span><span class=\"math-tex\">$\\Leftrightarrow \\left\\{ \\begin{array}{l} x^{\\prime} = 2 + 1 = 3\\\\ y^{\\prime} = 1 + 3 = 4 \\end{array} \\right.$<\/span><\/p><p><span class=\"math-tex\">$\\Rightarrow A^{\\prime}(3;4)$<\/span><\/p>","type":"choose","user_id":"88","test":"0","date":"2020-03-10 23:35:01"}]}