{"id":2545,"date":"2021-10-14T21:03:24","date_gmt":"2021-10-14T14:03:24","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=2545"},"modified":"2021-10-14T22:11:16","modified_gmt":"2021-10-14T15:11:16","slug":"ham-so-va-nhung-kien-thuc-co-ban-toan-lop-7-la-chuyen-nho","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/ham-so-va-nhung-kien-thuc-co-ban-toan-lop-7-la-chuyen-nho\/","title":{"rendered":"H\u00e0m s\u1ed1 v\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy\u1ec7n nh\u1ecf"},"content":{"rendered":"\n<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p>H\u00e0m s\u1ed1 l\u00e0 g\u00ec? Th\u1ebf n\u00e0o \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u00e0m s\u1ed1? Bi\u1ebfn s\u1ed1 l\u00e0 g\u00ec? Th\u1ebf n\u00e0o l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng bi\u1ebfn thi\u00ean? L\u00e0m sao \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb c\u1ee7a h\u00e0m s\u1ed1? H\u00e0m s\u1ed1 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m kh\u00e1 m\u1edbi m\u1ebb v\u00e0 c\u0169ng c\u00f3 v\u1ebb nh\u01b0 kh\u00e1 kh\u00f3 hi\u1ec3u. Th\u1ef1c t\u1ebf h\u00e0m s\u1ed1 kh\u00e1 \u0111\u01a1n gi\u1ea3n kh\u00f4ng h\u1ec1 h\u00f3c b\u00faa, n\u1ed9i dung ki\u1ebfn th\u1ee9c c\u0169ng r\u1ea5t quen thu\u1ed9c. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u trong b\u00e0i vi\u1ebft sau \u0111\u00e2y.<\/p>\n\n\n\n<p>H\u00e0m s\u1ed1 \u2013 M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa hai \u0111\u1ea1i l\u01b0\u1ee3ng bi\u1ebfn thi\u00ean<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 h\u00e0m s\u1ed1<\/li><\/ol>\n\n\n\n<p>V\u00ed d\u1ee5 1:<\/p>\n\n\n\n<p>B\u1ea3ng sau bi\u1ec3u di\u1ec5n nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh \u0111un s\u00f4i:<\/p>\n\n\n\n<p>t(ph\u00fat) 1 2 4 6 7 9 10 12<\/p>\n\n\n\n<p>n(\u0966C) 23 29 38 49 56 67 78 100<\/p>\n\n\n\n<p>C\u00e2u h\u1ecfi:<\/p>\n\n\n\n<p>Xe m\u00e1y \u0111i \u0111\u01b0\u1ee3c 80km v\u1edbi 1 l\u00edt x\u0103ng, v\u1eady v\u1edbi m\u1ed7i qu\u00e3ng \u0111\u01b0\u1eddng sau, ng\u01b0\u1eddi ta ph\u1ea3i \u0111\u1ed5 \u00edt nh\u1ea5t bao nhi\u00eau l\u00edt x\u0103ng?<\/p>\n\n\n\n<p>160km<\/p>\n\n\n\n<p>120km<\/p>\n\n\n\n<p>360km<\/p>\n\n\n\n<p>1070km<\/p>\n\n\n\n<p>Ta c\u00f3:<\/p>\n\n\n\n<p>160 : 80 = 2 (l\u00edt)<\/p>\n\n\n\n<p>120 : 80 = 1,5 (l\u00edt)<\/p>\n\n\n\n<p>360 : 80 = 4,5 (l\u00edt)<\/p>\n\n\n\n<p>1070 : 80 = 13,4 (l\u00edt)<\/p>\n\n\n\n<p>V\u00ed d\u1ee5 2:<\/p>\n\n\n\n<p>G\u1ecdi t (gi\u1edd) l\u00e0 th\u1eddi gian di chuy\u1ec3n c\u1ee7a xe, v (Km\/h) = 40 l\u00e0 v\u1eadn t\u1ed1c c\u1ee7a xe, s (Km) l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng. Th\u1eddi gian v\u00e0 v\u1eadn t\u1ed1c c\u00f3 m\u1ed1i quan h\u1ec7 t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi nhau. Trong \u0111\u00f3, th\u1eddi gian di chuy\u1ec3n t = s\/v.<\/p>\n\n\n\n<p>T\u00ednh th\u1eddi gian di chuy\u1ec3n c\u1ee7a xe v\u1edbi c\u00e1c qu\u00e3ng \u0111\u01b0\u1eddng c\u00f3 chi\u1ec1u d\u00e0i nh\u01b0 sau (km): 100, 120, 160, 180, 240, 360.<\/p>\n\n\n\n<p>L\u1eadp b\u1ea3ng bi\u1ec3u di\u1ec5n th\u1eddi gian v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng.<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>Ta c\u00f3 th\u1eddi gian di chuy\u1ec3n c\u1ee7a xe l\u00e0:<\/p>\n\n\n\n<p>100 : 40 = 2,5 (gi\u1edd)<\/p>\n\n\n\n<p>120 : 40 = 3 (gi\u1edd)<\/p>\n\n\n\n<p>160 : 40 = 4 (gi\u1edd)<\/p>\n\n\n\n<p>240 : 40 = 6 (gi\u1edd)<\/p>\n\n\n\n<p>360 : 40 = 9 (gi\u1edd)<\/p>\n\n\n\n<p>Ta c\u00f3 b\u1ea3ng sau:<\/p>\n\n\n\n<p>s 100 120 160 240 360<\/p>\n\n\n\n<p>t 2,5 3 4 6 9<\/p>\n\n\n\n<p>Nh\u1eadn x\u00e9t:<\/p>\n\n\n\n<p>Ta th\u1ea5y trong v\u00ed d\u1ee5 1, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u01b0\u1edbc thay \u0111\u1ed5i ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian \u0111un. V\u1edbi m\u1ed7i gi\u00e1 tr\u1ecb c\u1ee7a t ta \u0111\u01b0\u1ee3c 1 gi\u00e1 tr\u1ecb n t\u01b0\u01a1ng \u1ee9ng<\/p>\n\n\n\n<p>Trong v\u00ed d\u1ee5 2, th\u1eddi gian di chuy\u1ec3n thay \u0111\u1ed5i ph\u1ee5 thu\u1ed9c v\u00e0o qu\u00e3ng \u0111\u01b0\u1eddng. V\u1edbi m\u1ed7i gi\u00e1 tr\u1ecb s ta \u0111\u01b0\u1ee3c 1 gi\u00e1 tr\u1ecb t t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n<p>Ta n\u00f3i n l\u00e0 h\u00e0m s\u1ed1 c\u1ee7a t<\/p>\n\n\n\n<p>t l\u00e0 h\u00e0m s\u1ed1 c\u1ee7a s.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\"><li>H\u00e0m s\u1ed1 l\u00e0 g\u00ec?<\/li><\/ol>\n\n\n\n<p>\u0110\u1ecbnh ngh\u0129a:<\/p>\n\n\n\n<p>Nh\u01b0 v\u1eady, n\u1ebfu nh\u01b0 v\u1edbi m\u1ed7i gi\u00e1 tr\u1ecb c\u1ee7a x, ta thu \u0111\u01b0\u1ee3c nhi\u1ec1u h\u01a1n 1 gi\u00e1 tr\u1ecb c\u1ee7a y th\u00ec \u0111\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u00e0m s\u1ed1. V\u1eady v\u1edbi tr\u01b0\u1eddng h\u1ee3p x ho\u1eb7c y thay \u0111\u1ed5i nh\u01b0ng ch\u1ec9 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c duy nh\u1ea5t 1 gi\u00e1 tr\u1ecb c\u1ee7a \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f2n l\u1ea1i th\u00ec \u0111\u00f3 c\u00f3 \u0111\u01b0\u1ee3c coi l\u00e0 h\u00e0m s\u1ed1 hay kh\u00f4ng?<\/p>\n\n\n\n<p>Ch\u00fa \u00fd: N\u1ebfu x thay \u0111\u1ed5i nh\u01b0ng y kh\u00f4ng \u0111\u1ed5i th\u00ec y g\u1ecdi l\u00e0 h\u00e0m h\u1eb1ng<\/p>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>y = 0.x<\/li><\/ul>\n\n\n\n<p>B\u1ea3ng gi\u00e1 tr\u1ecb:<\/p>\n\n\n\n<p>x 1 4 9 23 62 87 100 1000 100000<\/p>\n\n\n\n<p>y 0 0 0 0 0 0 0 0 0<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>y =0:x<\/li><\/ul>\n\n\n\n<p>B\u1ea3ng gi\u00e1 tr\u1ecb:<\/p>\n\n\n\n<p>x 1 5 6 9 14 56 134 9562 56889<\/p>\n\n\n\n<p>y 0 0 0 0 0 0 0 0 0<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\"><li>M\u1eb9o h\u1ecdc t\u1ed1t:<\/li><\/ol>\n\n\n\n<ul class=\"wp-block-list\"><li>Ghi nh\u1edb ki\u1ebfn th\u1ee9c v\u1ec1 h\u00e0m s\u1ed1. Hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, h\u00e0m s\u1ed1 th\u1ec3 hi\u1ec7n m\u1ed1i quan h\u1ec7 gi\u1eefa hai \u0111\u1ea1i l\u01b0\u1ee3ng, n\u1ebfu \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y thay \u0111\u1ed5i c\u0169ng d\u1eabn t\u1edbi s\u1ef1 thay \u0111\u1ed5i c\u1ee7a \u0111\u1ea1i l\u01b0\u1ee3ng kia th\u00ec \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u00e0m s\u1ed1.<\/li><li>M\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng trong h\u00e0m s\u1ed1 c\u00f3 th\u1ec3 l\u00e0 t\u1ec9 l\u1ec7 thu\u1eadn, t\u1ec9 l\u1ec7 ngh\u1ecbch ho\u1eb7c 1 \u0111\u1ea1i l\u01b0\u1ee3ng kh\u00f4ng thay \u0111\u1ed5i d\u00f9 cho \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f2n l\u1ea1i c\u00f3 li\u00ean th\u1ee5c thay \u0111\u1ed5i.<\/li><li>M\u1ed9t s\u1ed1 h\u00e0m h\u1eb1ng ti\u00eau ti\u1ec3u l\u00e0 h\u00e0m s\u1ed1 c\u1ee7a tr\u1ee5c tung v\u00e0 tr\u1ee5c ho\u00e0nh.<\/li><\/ul>\n\n\n\n<p>Ta c\u00f3 h\u00e0m c\u1ee7a tr\u1ee5c tung l\u00e0 y = 0. V\u1edbi m\u1ecdi gi\u00e1 tr\u1ecb c\u1ee7a y, x v\u1eabn lu\u00f4n c\u00f3 gi\u00e1 tr\u1ecb kh\u00f4ng \u0111\u1ed5i l\u00e0 0. V\u00ec v\u1eady, m\u1ecdi \u0111i\u1ec3m b\u1ea5t k\u1ef3 tr\u00ean tr\u1ee5c tung \u0111\u1ec1u c\u00f3 ho\u00e0nh \u0111\u1ed9 b\u1eb1ng 0<\/p>\n\n\n\n<p>Ng\u01b0\u1ee3c l\u1ea1i, v\u1edbi h\u00e0m c\u1ee7a tr\u1ee5c ho\u00e0nh 0 = x. V\u1edbi m\u1ecdi gi\u00e1 tr\u1ecb c\u1ee7a x, y \u0111\u1ec1u c\u00f3 gi\u00e1 tr\u1ecb kh\u00f4ng \u0111\u1ed5i v\u00e0 b\u1eb1ng 0. V\u00ec v\u1eady, m\u1ecdi \u0111i\u1ec3m b\u1ea5t k\u1ef3 tr\u00ean tr\u1ee5c ho\u00e0nh \u0111\u1ec1u c\u00f3 tung \u0111\u1ed9 b\u1eb1ng 0.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\"><li>B\u00e0i t\u1eadp v\u1eadn d\u1ee5ng<\/li><\/ol>\n\n\n\n<p>B\u00e0i t\u1eadp 1:<\/p>\n\n\n\n<p>Cho h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4. T\u00ednh g(2), g(4), g(9), g(-3), g(4,5), g(0)<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>Thay x = 2 v\u00e0o h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4 ta c\u00f3: g(2) = (3 . 2 + 5)\/4 = 11\/4<\/p>\n\n\n\n<p>Thay x = 4 v\u00e0o h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4 ta c\u00f3: g(4) = (3 . 4 + 5)\/4 = 17\/4<\/p>\n\n\n\n<p>Thay x = 9 v\u00e0o h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4 ta c\u00f3: g(9) = (3 . 9 + 5)\/4 = 8<\/p>\n\n\n\n<p>Thay x = -3 v\u00e0o h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4 ta c\u00f3: g(9) = (3 . -3 + 5)\/4 = -1<\/p>\n\n\n\n<p>Thay x = 4,5 v\u00e0o h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4 ta c\u00f3: g(9) = (3 . 4,5 + 5)\/4 = 4,625<\/p>\n\n\n\n<p>Thay x = 0 v\u00e0o h\u00e0m s\u1ed1 y = g(x) = (3 . x + 5)\/4 ta c\u00f3: g(9) = (3 . 0 + 5)\/4 = 5\/4<\/p>\n\n\n\n<p>B\u00e0i t\u1eadp 2:<\/p>\n\n\n\n<p>Cho h\u00e0m s\u1ed1 y = f(x) = -9x \u2013 9. Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang?<\/p>\n\n\n\n<p>f(4) = -45<\/p>\n\n\n\n<p>f(7) = -72<\/p>\n\n\n\n<p>f(8) = 78<\/p>\n\n\n\n<p>f(9) = 90<\/p>\n\n\n\n<p>Ta c\u00f3:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Thay x = 4 v\u00e0o h\u00e0m s\u1ed1 ta c\u00f3: f(4) = -9.4 \u2013 9 = -45<\/li><li>Thay x = 7 v\u00e0o h\u00e0m s\u1ed1 ta c\u00f3: f(7) = -9.7 -9 = -72<\/li><li>Thay x = 8 v\u00e0o h\u00e0m s\u1ed1 ta c\u00f3: f(8) = -9.8 \u2013 9 = -81<\/li><li>Thay x = 9 v\u00e0o h\u00e0m s\u1ed1 ta c\u00f3: f(9) = -9.9 \u2013 9 = 90<\/li><\/ol>\n\n\n\n<p>V\u1eady, kh\u1eb3ng \u0111\u1ecbnh a v\u00e0 b \u0111\u00fang, kh\u1eb3ng \u0111\u1ecbnh c v\u00e0 d sai.<\/p>\n\n\n\n<p>B\u00e0i t\u1eadp 3:<\/p>\n\n\n\n<p>Cho c\u00e1c \u0111i\u1ec3m c\u00f3 t\u1ecda \u0111\u1ed9 nh\u01b0 sau, x\u00e1c \u0111\u1ecbnh \u0111\u00e2u l\u00e0 nh\u1eefng \u0111i\u1ec3m thu\u1ed9c tr\u1ee5c tung, \u0111\u00e2u l\u00e0 nh\u1eefng \u0111i\u1ec3m thu\u1ed9c tr\u1ee5c ho\u00e0nh<\/p>\n\n\n\n<p>a. A (1 ; 3)<\/p>\n\n\n\n<p>b. B (0 ; 2)<\/p>\n\n\n\n<p>c. C (4 ; 0)<\/p>\n\n\n\n<p>d. D (0 ; 9)<\/p>\n\n\n\n<p>e. E (3 ; 3)<\/p>\n\n\n\n<p>f. F (16,7 ; 0)<\/p>\n\n\n\n<p>g. G (0 ; 0)<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>a. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a A l\u00e0 (1; 3) =&gt; \u0110i\u1ec3m A kh\u00f4ng thu\u1ed9c tr\u1ee5c tung v\u00e0 c\u0169ng kh\u00f4ng thu\u1ed9c tr\u1ee5c ho\u00e0nh<\/p>\n\n\n\n<p>b. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a B l\u00e0 (0 ; 2) =&gt; Ho\u00e0nh \u0111\u1ed9 c\u1ee7a B = 0 n\u00ean \u0111i\u1ec3m B thu\u1ed9c tr\u1ee5c tung<\/p>\n\n\n\n<p>c. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a C l\u00e0 (4 ; 0) =&gt; Tung \u0111\u1ed9 c\u1ee7a C = 0 n\u00ean \u0111i\u1ec3m C thu\u1ed9c tr\u1ee5c ho\u00e0nh<\/p>\n\n\n\n<p>d. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a D l\u00e0 (0; 9) =&gt; Ho\u00e0nh \u0111\u1ed9 c\u1ee7a D = 0 n\u00ean \u0111i\u1ec3m D thu\u1ed9c tr\u1ee5c tung<\/p>\n\n\n\n<p>e. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a E l\u00e0 (3 ; 3) =&gt; \u0110i\u1ec3m E kh\u00f4ng thu\u1ed9c tr\u1ee5c tung c\u0169ng kh\u00f4ng thu\u1ed9c tr\u1ee5c ho\u00e0nh<\/p>\n\n\n\n<p>f. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a F l\u00e0 (16,7 ; 0) =&gt; Tung \u0111\u1ed9 c\u1ee7a F = 0 n\u00ean \u0111i\u1ec3m F thu\u1ed9c tr\u1ee5c ho\u00e0nh<\/p>\n\n\n\n<p>g. Ta c\u00f3 t\u1ecda \u0111\u1ed9 c\u1ee7a G l\u00e0 (0 ; 0) =&gt; Tung \u0111\u1ed9 c\u1ee7a G = 0, ho\u00e0nh \u0111\u1ed9 c\u1ee7a G c\u0169ng = 0 n\u00ean G v\u1eeba thu\u1ed9c tr\u1ee5c tung l\u1ea1i v\u1eeba thu\u1ed9c tr\u1ee5c ho\u00e0nh.<\/p>\n\n\n\n<p>=&gt; G l\u00e0 giao \u0111i\u1ec3m c\u1ee7a tr\u1ee5c tung v\u00e0 tr\u1ee5c ho\u00e0nh n\u00ean G l\u00e0 g\u1ed1c t\u1ecda \u0111\u1ed9<\/p>\n\n\n\n<p>T\u1ed5ng k\u1ebft: Hy v\u1ecdng v\u1edbi nh\u1eefng n\u1ed9i dung tr\u00ean, c\u00e1c b\u1ea1n \u0111\u00e3 c\u00f3 th\u1ec3 n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 h\u00e0m s\u1ed1: Kh\u00e1i ni\u1ec7m v\u1ec1 h\u00e0m s\u1ed1, m\u1ed1i quan h\u1ec7 gi\u1eefa hai \u0111\u1ea1i l\u01b0\u1ee3ng (t\u1ec9 l\u1ec7 thu\u1eadn, t\u1ec9 l\u1ec7 ngh\u1ecbch, h\u00e0m h\u1eb1ng), h\u00e0m \u0111\u1eb7c bi\u1ec7t c\u1ee7a tr\u1ee5c tung v\u00e0 tr\u1ee5c ho\u00e0nh. H\u00e3y th\u01b0\u1eddng xuy\u00ean \u00f4n t\u1eadp ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft v\u00e0 luy\u1ec7n gi\u1ea3i b\u00e0i t\u1eadp \u0111\u1ec3 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c b\u00e0i h\u1ecdc. Theo d\u00f5i Vietlearn \u0111\u1ec3 c\u1eadp nh\u1eadt nh\u1eefng b\u00e0i h\u1ecdc b\u1ed5 \u00edch.<\/p>\n\n\n\n<p>V\u1ec1 Vietlearn<\/p>\n\n\n\n<p>H\u1ecdc tr\u1ef1c tuy\u1ebfn t\u1ea1i Vietlearn<\/p>\n\n\n\n<p>Vietlearn l\u00e0 c\u00f4ng ty Edtech v\u1ec1 gi\u00e1o d\u1ee5c tr\u1ef1c tuy\u1ebfn, cung c\u1ea5p tr\u1ea3i nghi\u1ec7m <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> c\u00e1 nh\u00e2n cho h\u00e0ng tr\u0103m ngh\u00ecn <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a>, sinh vi\u00ean v\u00e0 nh\u00e0 tr\u01b0\u1eddng \u0111\u1ec3 gi\u1ea3i \u0111\u00e1p nh\u1eefng y\u00eau c\u1ea7u trong vi\u1ec7c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> Anh ng\u1eef th\u00f4ng qua m\u1ea1ng l\u01b0\u1edbi c\u00e1c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">chuy\u00ean gia<\/a> v\u00e0 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">gi\u00e1o vi\u00ean<\/a> kh\u1eafp to\u00e0n c\u1ea7u m\u00e0 ch\u00fang t\u00f4i g\u1ecdi l\u00e0 c\u00e1c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">gia s\u01b0<\/a> h\u1ecdc thu\u1eadt qu\u1ed1c t\u1ebf.<\/p>\n\n\n\n<p>Vietlearn mong mu\u1ed1n tr\u1edf th\u00e0nh h\u1ec7 th\u1ed1ng <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc t\u1eadp<\/a> th\u00edch \u1ee9ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 d\u1eef li\u1ec7u l\u1edbn h\u00e0ng \u0111\u1ea7u \u0110\u00f4ng Nam \u00c1. S\u1ee9 m\u1ec7nh c\u1ee7a Vietlearn l\u00e0 truy\u1ec1n c\u1ea3m h\u1ee9ng, truy\u1ec1n l\u1eeda, v\u00e0 b\u1ed3i d\u01b0\u1ee1ng th\u1ebf h\u1ec7 tr\u1ebb. Vietlearn mong mu\u1ed1n t\u1ea1o ra s\u1ef1 thay \u0111\u1ed5i v\u1ec1 tr\u00ed tu\u1ec7, nh\u1eadn th\u1ee9c x\u00e3 h\u1ed9i truy\u1ec1n c\u1ea3m h\u1ee9ng , gi\u00fap c\u00e1c em ph\u00e1t huy h\u1ebft ti\u1ec1m n\u0103ng trong vi\u1ec7c h\u1ecdc c\u0169ng nh\u01b0 \u0111i\u1ec3m m\u1ea1nh c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>\u0110\u0103ng k\u00fd kh\u00f3a h\u1ecdc cho con ngay h\u00f4m nay!<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Tam gi\u00e1c c\u00e2n v\u00e0 ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn H\u00e0m s\u1ed1 l\u00e0 g\u00ec? Th\u1ebf n\u00e0o \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u00e0m s\u1ed1? Bi\u1ebfn s\u1ed1 l\u00e0 g\u00ec? Th\u1ebf n\u00e0o l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng bi\u1ebfn thi\u00ean? L\u00e0m sao \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb c\u1ee7a h\u00e0m s\u1ed1? H\u00e0m s\u1ed1 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m kh\u00e1 m\u1edbi m\u1ebb v\u00e0 c\u0169ng c\u00f3 v\u1ebb nh\u01b0 kh\u00e1 kh\u00f3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[9,4],"tags":[],"class_list":["post-2545","post","type-post","status-publish","format-standard","hentry","category-toan-hoc","category-trung-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=2545"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2545\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}