{"common":{"save":0,"post_id":"976","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"781","post_id":"976","mon_id":"0","chapter_id":"0","question":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","options":{"time":24,"part":[{"title":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","title_trans":"","temp":"coordinates","correct":[["2,-1","1,-0.5","3,-1.5","4,-2","-2,1","-1,0.5","-3,1.5","-4,2"]],"list":[{"point":5,"toa_do":[["0","0",""]],"is_click":1,"name_toado_click":"A","draw_line":1,"ques":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 $y = \\dfrac{-1}{2}x$ <br\/> <br\/>_inputduongthang_ <br\/> H\u00e3y click th\u00eam m\u1ed9t \u0111i\u1ec3m thu\u1ed9c \u0111\u1ed3 th\u1ecb \u0111\u1ec3 v\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111i\u1ec3m A thu\u1ed9c \u0111\u1ed3 th\u1ecb (kh\u00e1c g\u1ed1c O) b\u1eb1ng c\u00e1ch cho x m\u1ed9t gi\u00e1 tr\u1ecb kh\u00e1c 0 r\u1ed3i t\u00ecm gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng c\u1ee7a y. <br\/> B\u01b0\u1edbc 2: V\u1ebd \u0111i\u1ec3m A(x; y) <br\/> B\u01b0\u1edbc 3: V\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng OA ta \u0111\u01b0\u1ee3c \u0111\u1ed3 th\u1ecb c\u1ee7a h\u00e0m s\u1ed1 \u0111\u00e3 cho. <\/span> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> <br\/> Cho $y = \\dfrac{-1}{2}x ,$ v\u1edbi $x = 2$ th\u00ec $y = -1$ <br\/> V\u1ebd \u0111i\u1ec3m $A(2; -1).$ \u0110\u01b0\u1eddng th\u1eb3ng OA l\u00e0 \u0111\u1ed3 th\u1ecb c\u1ee7a h\u00e0m s\u1ed1 $y = \\dfrac{-1}{2}x$ <br\/> <center><img src='img\/D7B17-13.png' \/><\/center> "}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:51"},{"id":"782","post_id":"976","mon_id":"0","chapter_id":"0","question":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","options":{"time":24,"part":[{"title":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","title_trans":"","temp":"coordinates","correct":[["2,3","1,1.5","3,4.5","-2,-3","-1,-1.5","-3,-4.5"]],"list":[{"point":5,"toa_do":[["0","0",""]],"is_click":1,"name_toado_click":"A","draw_line":1,"ques":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 $y = \\dfrac{3}{2}x$ <br\/> <br\/>_inputduongthang_ <br\/> H\u00e3y click th\u00eam m\u1ed9t \u0111i\u1ec3m thu\u1ed9c \u0111\u1ed3 th\u1ecb \u0111\u1ec3 v\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111i\u1ec3m A thu\u1ed9c \u0111\u1ed3 th\u1ecb (kh\u00e1c g\u1ed1c O) b\u1eb1ng c\u00e1ch cho x m\u1ed9t gi\u00e1 tr\u1ecb kh\u00e1c 0 r\u1ed3i t\u00ecm gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng c\u1ee7a y. <br\/> B\u01b0\u1edbc 2: V\u1ebd \u0111i\u1ec3m A(x; y) <br\/> B\u01b0\u1edbc 3: V\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng OA ta \u0111\u01b0\u1ee3c \u0111\u1ed3 th\u1ecb c\u1ee7a h\u00e0m s\u1ed1 \u0111\u00e3 cho. <\/span> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Cho $y = \\dfrac{3}{2}x ,$ v\u1edbi x = 2 th\u00ec y = 3 <br\/> V\u1ebd \u0111i\u1ec3m A(2; 3). \u0110\u01b0\u1eddng th\u1eb3ng OA l\u00e0 \u0111\u1ed3 th\u1ecb c\u1ee7a h\u00e0m s\u1ed1 $y = \\dfrac{3}{2}x$ <br\/> <center><img src='img\/D7B17-12.png' \/><\/center> "}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:51"},{"id":"783","post_id":"976","mon_id":"0","chapter_id":"0","question":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","options":{"time":24,"part":[{"title":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","title_trans":"","temp":"coordinates","correct":[["3,-4","-3,4"]],"list":[{"point":5,"toa_do":[["0","0",""]],"is_click":1,"name_toado_click":"A","draw_line":1,"ques":"V\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 $y = -1\\dfrac{1}{3}x$ <br\/> <br\/>_inputduongthang_ <br\/> H\u00e3y click th\u00eam m\u1ed9t \u0111i\u1ec3m thu\u1ed9c \u0111\u1ed3 th\u1ecb \u0111\u1ec3 v\u1ebd \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111i\u1ec3m A thu\u1ed9c \u0111\u1ed3 th\u1ecb (kh\u00e1c g\u1ed1c O) b\u1eb1ng c\u00e1ch cho x m\u1ed9t gi\u00e1 tr\u1ecb kh\u00e1c 0 r\u1ed3i t\u00ecm gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng c\u1ee7a y. <br\/> B\u01b0\u1edbc 2: V\u1ebd \u0111i\u1ec3m A(x; y) <br\/> B\u01b0\u1edbc 3: V\u1ebd \u0111\u01b0\u1eddng th\u1eb3ng OA ta \u0111\u01b0\u1ee3c \u0111\u1ed3 th\u1ecb c\u1ee7a h\u00e0m s\u1ed1 \u0111\u00e3 cho. <\/span> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> <br\/> Cho $y = -1\\dfrac{1}{3}x = \\dfrac{-4}{3}x ,$ v\u1edbi $x = 3$ th\u00ec $y = -4$ <br\/> V\u1ebd \u0111i\u1ec3m $A(3; -4).$ \u0110\u01b0\u1eddng th\u1eb3ng OA l\u00e0 \u0111\u1ed3 th\u1ecb c\u1ee7a h\u00e0m s\u1ed1 $y = -1\\dfrac{1}{3}x$ <br\/> <center><img src='img\/D7B17-11.png' \/><\/center> "}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:51"}]}