{"id":2547,"date":"2021-10-14T21:03:39","date_gmt":"2021-10-14T14:03:39","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=2547"},"modified":"2021-10-14T22:11:16","modified_gmt":"2021-10-14T15:11:16","slug":"dai-luong-ti-le-nghich-toan-lop-7-la-chuyen-nho","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/dai-luong-ti-le-nghich-toan-lop-7-la-chuyen-nho\/","title":{"rendered":"\u0110\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch \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>\u0110\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch l\u00e0 g\u00ec? C\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch c\u00f3 t\u00ednh ch\u1ea5t g\u00ec? L\u00e0m sao \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng khi bi\u1ebft h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 c\u1ee7a n\u00f3 v\u1edbi m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng kh\u00e1c? \u0110\u00e2y l\u00e0 n\u1ed9i dung ki\u1ebfn th\u1ee9c kh\u00f4ng kh\u00f3 nh\u01b0ng t\u00ean g\u1ecdi l\u1ea1i kh\u00e1 tr\u1eebu t\u01b0\u1ee3ng. Nhi\u1ec1u <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> c\u1ea3m th\u1ea5y l\u1ea1 l\u1eabm v\u00e0 kh\u00f4ng n\u1eafm ch\u1eafc \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c. \u0110\u1eebng lo l\u1eafng, Vietlearn s\u1ebd gi\u00fap b\u00e9 t\u00ecm hi\u1ec3u v\u1ec1 \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch v\u00e0 h\u01b0\u1edbng d\u1eabn gi\u1ea3i c\u00e1c b\u00e0i t\u1eadp c\u01a1 b\u1ea3n. C\u00f9ng theo d\u00f5i b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a Vietlearn nh\u00e9.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u0110\u1ecbnh ngh\u0129a \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch<\/li><\/ol>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<p>M\u1ed9t \u0111o\u1ea1n \u0111\u01b0\u1eddng c\u00f3 chi\u1ec1u d\u00e0i d=60km, v (km\/h) l\u00e0 v\u1eadn t\u1ed1c c\u1ee7a chi\u1ebfc xe m\u00e1y di chuy\u1ec3n tr\u00ean qu\u00e3ng \u0111\u01b0\u1eddng \u0111\u00f3. t l\u00e0 th\u1eddi gian chi\u1ebfc xe m\u00e1y \u0111\u00f3 \u0111i h\u1ebft qu\u00e3ng \u0111\u01b0\u1eddng.<\/p>\n\n\n\n<p>Ta c\u00f3 v = d\/t<\/p>\n\n\n\n<p>Gi\u1ea3 s\u1eed, ban \u0111\u1ea7u xe m\u00e1y di chuy\u1ec3n h\u1ebft qu\u00e3ng \u0111\u01b0\u1eddng m\u1ea5t 2 gi\u1edd.<\/p>\n\n\n\n<p>=&gt; V\u1eadn t\u1ed1c c\u1ee7a xe l\u00e0: v = 60\/2 = 30 km\/h<\/p>\n\n\n\n<p>Trong c\u00f4ng th\u1ee9c tr\u00ean, qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng thay \u0111\u1ed5i, v\u1eadn t\u1ed1c (v) v\u00e0 th\u1eddi gian (t) l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i. N\u1ebfu th\u1eddi gian xe m\u00e1y di chuy\u1ec3n ch\u1ec9 c\u00f2n 1,5 gi\u1edd, v\u1eadn t\u1ed1c khi \u0111\u00f3 l\u00e0:<\/p>\n\n\n\n<p>v = 60\/1,5 = 40 hm\/h<\/p>\n\n\n\n<p>Nh\u1eadn x\u00e9t: V\u1edbi d kh\u00f4ng \u0111\u1ed5i th\u00ec khi gi\u00e1 tr\u1ecb c\u1ee7a t thay \u0111\u1ed5i th\u00ec gi\u00e1 tr\u1ecb c\u1ee7a v c\u0169ng thay \u0111\u1ed5i.<\/p>\n\n\n\n<p>=&gt; Ta c\u00f3 k\u1ebft lu\u1eadn:<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\"><li>T\u00ednh ch\u1ea5t:<\/li><\/ol>\n\n\n\n<p>Cho b\u1ea3ng sau:<\/p>\n\n\n\n<p>x x1 = 3 x2 = 4 x3 = 6 x4 = 12<\/p>\n\n\n\n<p>y y1 = 4 y2 = ? y3 = ? y4 = ?<\/p>\n\n\n\n<p>Y\u00eau c\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>T\u00ednh h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 c\u1ee7a hai \u0111\u1ea1i l\u01b0\u1ee3ng x v\u00e0 y<\/li><li>Ho\u00e0n thi\u1ec7n b\u1ea3ng gi\u00e1 tr\u1ecb c\u1ee7a x v\u00e0 y<\/li><li>Nh\u1eadn x\u00e9t v\u1ec1 gi\u00e1 tr\u1ecb c\u1ee7a x1y1, x2y2, x3y3, x4y4<\/li><\/ul>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>+H\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 gi\u1eefa x v\u00e0 y l\u00e0:<\/p>\n\n\n\n<p>a = x . y = 3 . 4 = 12<\/p>\n\n\n\n<p>+Ta c\u00f3 b\u1ea3ng gi\u00e1 tr\u1ecb sau:<\/p>\n\n\n\n<p>x x1 = 3 x2 = 4 x3 = 6 x4 = 12<\/p>\n\n\n\n<p>y y1 = 4 y2 = 3 y3 = 2 y4 = 1<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Ta th\u1ea5y: x1y1 = x2y2 = x3y3 = x4y4 = 12<\/li><\/ul>\n\n\n\n<p>K\u1ebft lu\u1eadn:<\/p>\n\n\n\n<p>=&gt; \u1ee8ng d\u1ee5ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>C\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t trong 2 \u0111\u1ea1i l\u01b0\u1ee3ng x ho\u1eb7c y khi bi\u1ebft 1 \u0111\u1ea1i l\u01b0\u1ee3ng v\u00e0 h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 c\u1ee7a ch\u00fang<\/li><li>C\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng v\u00e0 \u1ee9ng d\u1ee5ng v\u00e0o th\u1ef1c t\u1ebf. V\u00ed d\u1ee5: T\u00ednh th\u1eddi gian, v\u1eadn t\u1ed1c, kho\u1ea3ng c\u00e1ch,\u2026<\/li><\/ul>\n\n\n\n<ol class=\"wp-block-list\"><li>N\u1ed9i dung c\u1ea7n ghi nh\u1edb<\/li><\/ol>\n\n\n\n<p>V\u1edbi a l\u00e0 s\u1ed1 kh\u00e1c 0, n\u1ebfu x = a\/y, ta n\u00f3i x v\u00e0 y l\u00e0 2 \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi nhau theo h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 a. M\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, \u0111\u1ea1i l\u01b0\u1ee3ng x v\u00e0 y c\u00f3 gi\u00e1 tr\u1ecb \u0111\u1ed1i ngh\u1ecbch. N\u1ebfu gi\u00e1 tr\u1ecb c\u1ee7a x t\u0103ng th\u00ec gi\u00e1 tr\u1ecbc \u1ee7a y gi\u1ea3m. N\u1ebfu gi\u00e1 tr\u1ecb c\u1ee7a y gi\u1ea3m th\u00ec gi\u00e1 tr\u1ecb c\u1ee7a x t\u0103ng.<\/p>\n\n\n\n<p>C\u00e1c c\u1eb7p \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch c\u00f3 t\u00edch b\u1eb1ng nhau v\u00e0 b\u1eb1ng h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7. D\u00f9 gi\u00e1 tr\u1ecb c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng x v\u00e0 y thay \u0111\u1ed5i nh\u01b0ng t\u1ec9 l\u1ec7 gi\u1eefa ch\u00fang lu\u00f4n b\u1eb1ng h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7. V\u00ed d\u1ee5: Nh\u1eadn x\u00e9t \u1edf ph\u1ea7n 2.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\"><li>B\u00e0i t\u1eadp v\u1eadn d\u1ee5ng v\u1ec1 \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch:<\/li><\/ol>\n\n\n\n<p>B\u00e0i 1:<\/p>\n\n\n\n<p>Cho a v\u00e0 b l\u00e0 2 \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch. N\u1ebfu a = 3 th\u00ec b = 10.<\/p>\n\n\n\n<p>T\u00ecm h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 c<\/p>\n\n\n\n<p>T\u00ecm gi\u00e1 tr\u1ecb c\u1ee7a b khi a l\u1ea7n l\u01b0\u1ee3t b\u1eb1ng 5 v\u00e0 6<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>H\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 l\u00e0: c = a . b = 3 . 9 = 30<\/p>\n\n\n\n<p>V\u1edbi a = 5, ta c\u00f3 b = 30\/5 = 6<\/p>\n\n\n\n<p>V\u1edbi a = 6, ta c\u00f3 b = 30\/6 = 5<\/p>\n\n\n\n<p>B\u00e0i 2:<\/p>\n\n\n\n<p>Cho x v\u00e0 y l\u00e0 2 \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch, bi\u1ebft h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 a = 90. Ho\u00e0n thi\u1ec7n b\u1ea3ng gi\u00e1 tr\u1ecb sau:<\/p>\n\n\n\n<p>x ? 2 ? ? 6 ? ? 15<\/p>\n\n\n\n<p>y 90 ? 30 18 ? 10 9 ?<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>Ta c\u00f3:<\/p>\n\n\n\n<p>x1 = 90\/90 = 1<\/p>\n\n\n\n<p>y2 = 90\/2 = 45<\/p>\n\n\n\n<p>x3 = 90\/30 = 3<\/p>\n\n\n\n<p>x4 = 90\/18 = 5<\/p>\n\n\n\n<p>y5 = 90\/6 = 15<\/p>\n\n\n\n<p>x6 = 90\/10 = 9<\/p>\n\n\n\n<p>x7 = 90\/9 = 10<\/p>\n\n\n\n<p>y8 = 90\/15 = 6<\/p>\n\n\n\n<p>Ta c\u00f3 b\u1ea3ng:<\/p>\n\n\n\n<p>x 1 2 3 5 6 9 10 15<\/p>\n\n\n\n<p>y 90 45 30 18 15 10 9 6<\/p>\n\n\n\n<p>B\u00e0i 3:<\/p>\n\n\n\n<p>M\u1ed9t x\u00ed nghi\u1ec7p s\u1ea3n xu\u1ea5t b\u00e1nh k\u1eb9o c\u00f3 47 c\u00f4ng nh\u00e2n ho\u00e0n thi\u1ec7n 1 l\u00f4 s\u1ea3n ph\u1ea9m ti\u00eau chu\u1ea9n m\u1ea5t 10 ng\u00e0y. V\u1edbi t\u00ecnh h\u00ecnh d\u1ecbch b\u1ec7nh Covid 19 ph\u1ea3i c\u1eaft gi\u1ea3m nh\u00e2n c\u00f4ng xu\u1ed1ng c\u00f2n 30 ng\u01b0\u1eddi, x\u00ed nghi\u1ec7p \u0111\u00f3 ph\u1ea3i m\u1ea5t bao l\u00e2u \u0111\u1ec3 s\u1ea3n xu\u1ea5t xong 1 l\u00f4 h\u00e0ng ti\u00eau chu\u1ea9n? (Bi\u1ebft n\u0103ng su\u1ea5t c\u1ee7a c\u00f4ng nh\u00e2n l\u00e0 kh\u00f4ng \u0111\u1ed5i)<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>G\u1ecdi th\u1eddi gian ho\u00e0n th\u00e0nh l\u00f4 h\u00e0ng l\u00e0 x, kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c cho 1 l\u00f4 h\u00e0ng l\u00e0 a.<\/p>\n\n\n\n<p>Ta c\u00f3:<\/p>\n\n\n\n<p>10 = a\/47<\/p>\n\n\n\n<p>x = a\/30<\/p>\n\n\n\n<p>=&gt; a = 10 . 47 = x . 30<\/p>\n\n\n\n<p>=&gt; a = 470 = 30x<\/p>\n\n\n\n<p>=&gt; x = 470\/30 = 15,7<\/p>\n\n\n\n<p>V\u1eady khi gi\u1ea3m nh\u00e2n c\u00f4ng xu\u1ed1ng c\u00f2n 30 ng\u01b0\u1eddi, x\u00ed nghi\u1ec7p ph\u1ea3i m\u1ea5t 15,7 ng\u00e0y \u0111\u1ec3 ho\u00e0n th\u00e0nh 1 l\u00f4 h\u00e0ng ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p>B\u00e0i 4:<\/p>\n\n\n\n<p>M\u1ed9t chi\u1ebfc xe m\u00e1y \u0111i t\u1eeb H\u00e0 N\u1ed9i v\u1ec1 H\u1ea3i Ph\u00f2ng m\u1ea5t 4 gi\u1edd. Khi quay v\u1ec1, n\u1ebfu chi\u1ebfc xe \u0111\u00f3 di chuy\u1ec3n b\u1eb1ng 1,3 t\u1ed1c \u0111\u1ed9 ban \u0111\u1ea7u th\u00ec s\u1ebd m\u1ea5t bao l\u00e2u \u0111\u1ec3 t\u1edbi \u0111\u01b0\u1ee3c H\u00e0 N\u1ed9i?<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>G\u1ecdi v\u1eadn t\u1ed1c l\u01b0\u1ee3t \u0111i v\u00e0 l\u01b0\u1ee3t v\u1ec1 l\u00e0 v1 v\u00e0 v2 (km\/h)<\/p>\n\n\n\n<p>G\u1ecdi th\u1eddi gian di chuy\u1ec3n l\u01b0\u1ee3t \u0111i v\u00e0 l\u01b0\u1ee3t v\u1ec1 l\u00e0 t1 v\u00e0 t2 (gi\u1edd)<\/p>\n\n\n\n<p>V\u00ec th\u1eddi gian v\u00e0 v\u1eadn t\u1ed1c l\u00e0 hai \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch n\u00ean ta c\u00f3:<\/p>\n\n\n\n<p>v2\/v1 = t1\/t2<\/p>\n\n\n\n<p>M\u00e0 t1\/t2 = 1,3, t1 = 4<\/p>\n\n\n\n<p>=&gt; t2 = 4\/1,3 = 3,1<\/p>\n\n\n\n<p>V\u1eady n\u1ebfu di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 b\u1eb1ng 1,3 v\u1eadn t\u1ed1c ban \u0111\u1ea7u, xe m\u00e1y ph\u1ea3i m\u1ea5t 3,1 gi\u1edd d\u1ec3 t\u1eeb H\u1ea3i Ph\u00f2ng v\u1ec1 H\u00e0 N\u1ed9i.<\/p>\n\n\n\n<p>B\u00e0i t\u1eadp 5:<\/p>\n\n\n\n<p>\u0110un n\u01b0\u1edbc b\u1eb1ng than s\u1ebd m\u1ea5t 14 ph\u00fat \u0111\u1ec3 n\u01b0\u1edbc s\u00f4i. N\u1ebfu \u0111\u1ed5i than th\u00e0nh ga v\u00e0 v\u1eabn \u0111un l\u01b0\u1ee3ng n\u01b0\u1edbc nh\u01b0 v\u1eady s\u1ebd m\u1ea5t th\u1eddi gian bao l\u00e2u? Bi\u1ebft nhi\u1ec7t l\u01b0\u1ee3ng m\u00e0 ga cung c\u1ea5p g\u1ea5p 1,4 l\u1ea7n so v\u1edbi than.<\/p>\n\n\n\n<p>L\u1eddi gi\u1ea3i:<\/p>\n\n\n\n<p>G\u1ecdi th\u1eddi gian \u0111\u1ec3 \u0111un s\u00f4i n\u01b0\u1edbc b\u1eb1ng than l\u00e0 t1, th\u1eddi gian \u0111\u1ec3 \u0111un s\u00f4i n\u01b0\u1edbc b\u1eb1ng ga l\u00e0 t2<\/p>\n\n\n\n<p>G\u1ecdi nhi\u1ec7t l\u01b0\u1ee3ng c\u1ee7a than l\u00e0 n1, nhi\u1ec7t l\u01b0\u1ee3ng c\u1ee7a ga l\u00e0 n2<\/p>\n\n\n\n<p>V\u00ec th\u1eddi gian v\u00e0 nhi\u1ec7t l\u01b0\u1ee3ng l\u00e0 hai \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch n\u00ean ta c\u00f3:<\/p>\n\n\n\n<p>t1\/t2 = n2\/n1<\/p>\n\n\n\n<p>M\u00e0 n2 = 1,4n1<\/p>\n\n\n\n<p>=&gt; t1\/t2 = 1,4n1\/n1 = 1.4<\/p>\n\n\n\n<p>=&gt; t2 = t1\/1,4 = 14\/1,4 = 10 (ph\u00fat)<\/p>\n\n\n\n<p>V\u1eady n\u1ebfu chuy\u1ec3n t\u1eeb than th\u00e0nh ga, s\u1ebd m\u1ea5t 10 ph\u00fat \u0111\u1ec3 \u0111un s\u00f4i n\u01b0\u1edbc.<\/p>\n\n\n\n<p>L\u1eddi k\u1ebft:<\/p>\n\n\n\n<p>Hy v\u1ecdng v\u1edbi nh\u1eefng n\u1ed9i dung tr\u00ean, Vietlearn \u0111\u00e3 gi\u00fap c\u00e1c b\u00e9 hi\u1ec3u v\u00e0 n\u1eafm \u0111\u01b0\u1ee3c n\u1ed9i dung ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch, nh\u1eefng m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa hai \u0111\u1ea1i l\u01b0\u1ee3ng v\u00e0 c\u00e1c l\u01b0u \u00fd c\u1ea7n ghi nh\u1edb. H\u00e3y \u00f4n luy\u1ec7n v\u00e0 l\u00e0m b\u00e0i t\u1eadp ch\u0103m ch\u1ec9 \u0111\u1ec3 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c. \u0110\u1eebng qu\u00ean th\u01b0\u1eddng xuy\u00ean 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 h\u1ecdc t\u1eadp 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>T\u1eeb vu\u00f4ng g\u00f3c \u0111\u1ebfn song song \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy\u1ec7n nh\u1ecf<\/p>\n\n\n\n<p>\u0110\u1ecbnh l\u00fd<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn \u0110\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch l\u00e0 g\u00ec? C\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 ngh\u1ecbch c\u00f3 t\u00ednh ch\u1ea5t g\u00ec? L\u00e0m sao \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng khi bi\u1ebft h\u1ec7 s\u1ed1 t\u1ec9 l\u1ec7 c\u1ee7a n\u00f3 v\u1edbi m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng kh\u00e1c? \u0110\u00e2y l\u00e0 n\u1ed9i dung ki\u1ebfn th\u1ee9c kh\u00f4ng 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-2547","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\/2547","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=2547"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2547\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}