{"common":{"save":0,"post_id":"955","level":1,"total":20,"point":5,"point_extra":0},"segment":[{"id":"661","post_id":"955","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["1"],["0"],["-2"]]],"list":[{"point":5,"width":50,"type_input":"","ques":" Cho h\u00e0m s\u1ed1 $y = 2x $ <br\/> \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng trong b\u1ea3ng sau: <table><tr><td>$x$<\/td><td>0<\/td><td>$-1$<\/td><td>_input_<\/td><\/tr><tr><td>$y$<\/td><td>_input_<\/td><td>_input_<\/td><td>2<\/td><\/tr><\/table>","explain":" Ta c\u00f3: $y = 2x $ <br\/> V\u1edbi $x = 0$ th\u00ec $ y = 2.0 =0 $ <br\/> V\u1edbi $x = -1$ th\u00ec $ y = 2.(-1) = -2 $ <br\/> V\u1edbi $y = 2$ th\u00ec $ x = 2 : 2 = 1 $ <br\/><br\/><span class='basic_pink'> \u0110\u00e1p \u00e1n c\u1ea7n \u0111i\u1ec1n theo th\u1ee9 t\u1ef1 t\u1eeb tr\u00e1i sang ph\u1ea3i l\u1ea7n l\u01b0\u1ee3t l\u00e0 $0, -2; 1$ <\/span><\/span> "}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:50"},{"id":"662","post_id":"955","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Cho h\u00e0m s\u1ed1 $y = f(x) = 4x + b $ <br\/> Bi\u1ebft $f(1) = 5$, t\u00ednh b? ","select":["A. $b = -1 $","B. $b = 9 $","C. $b = 1 $","D. $b = 2 $"],"hint":" T\u00ednh $f(1)$ sau \u0111\u00f3 t\u00ecm b.","explain":" Ta c\u00f3: $y = f(x) = 4x + b $ <br\/> Do \u0111\u00f3: $ f(1) = 4.1 + b = 4 + b$ <br\/> M\u00e0 $f(1) = 5 \\Rightarrow 4 + b = 5 \\Rightarrow b = 1 $ <br\/><br\/><span class='basic_pink'> \u0110\u00e1p \u00e1n \u0111\u00fang l\u00e0 C. <\/span><\/span> ","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:50"},{"id":"663","post_id":"955","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["6"]]],"list":[{"point":5,"width":50,"type_input":"","ques":" Cho h\u00e0m s\u1ed1 $y = f(x) $ c\u00f3 c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng cho b\u1edfi b\u1ea3ng sau: <table><tr><td>$x$<\/td><td>$-2$<\/td><td>$-1$<\/td><td>0<\/td><td>1<\/td><td>2<\/td><\/tr><tr><td>$f(x)$<\/td><td>6<\/td><td>4<\/td><td>2<\/td><td>0<\/td><td>0<\/td><\/tr><\/table> T\u00ednh $f(-2) = \\FormInput[40][bl_elm_true basic_elm basic_blank basic_blank_part]{}$ ","explain":" D\u1ef1a v\u00e0o b\u1ea3ng, ta c\u00f3: $f(-2) = 6 $ <br\/><span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0 6 <\/span><\/span> "}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:50"}]}