{"id":7613,"date":"2021-11-20T14:09:18","date_gmt":"2021-11-20T07:09:18","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=7613"},"modified":"2021-11-20T17:13:33","modified_gmt":"2021-11-20T10:13:33","slug":"vi-sao-noi-ba-nguoi-cung-di-voi-ta-at-co-mot-nguoi-la-thay-ta","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-noi-ba-nguoi-cung-di-voi-ta-at-co-mot-nguoi-la-thay-ta\/","title":{"rendered":"V\u00ec sao n\u00f3i &#8220;Ba ng\u01b0\u1eddi c\u00f9ng \u0111i v\u1edbi ta, \u1eaft c\u00f3 m\u1ed9t ng\u01b0\u1eddi l\u00e0 th\u1ea7y ta&#8221;?"},"content":{"rendered":"\n<p>Ch\u1eafc c\u00e1c b\u1ea1n \u0111\u00e3 t\u1eebng nghe c\u00e2u n\u00f3i: \u201cBa ng\u01b0\u1eddi c\u00f9ng \u0111i v\u1edbi ta \u1eaft c\u00f3 ng\u01b0\u1eddi l\u00e0 th\u1ea7y ta\u201d. \u0110\u00f3 l\u00e0 c\u00e2u n\u00f3i trong s\u00e1ch \u201cLu\u1eadn ng\u1eef\u201d tr\u00edch l\u1eddi n\u00f3i c\u1ee7a Kh\u1ed5ng T\u1eed, m\u1ed9t <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc gi\u1ea3<\/a> l\u1edbn th\u1eddi c\u1ed5 \u0111\u1ea1i. Tuy Kh\u1ed5ng T\u1eed l\u00e0 m\u1ed9t ng\u01b0\u1eddi c\u00f3 h\u1ecdc v\u1ea5n r\u1ea5t cao nh\u01b0ng \u00f4ng v\u1eabn hay khi\u00eam nh\u01b0\u1eddng m\u00e0 n\u00f3i v\u1edbi m\u1ecdi ng\u01b0\u1eddi nh\u01b0 v\u1eady. Th\u1ebf nh\u01b0ng th\u1ef1c t\u1ebf th\u00ec th\u1ebf n\u00e0o?<\/p>\n\n\n\n<p>C\u1ea7n ph\u1ea3i l\u00e0m r\u00f5 v\u1ea5n \u0111\u1ec1 n\u00e0y: Kh\u00f4ng c\u1ea7n ph\u1ea3i m\u1ecdi m\u1eb7t \u0111\u1ec1u l\u00e0 \u01b0u t\u00fa h\u01a1n m\u1ecdi ng\u01b0\u1eddi m\u1edbi l\u00e0 \u201cng\u01b0\u1eddi th\u1ea7y\u201d. N\u1ebfu c\u00f3 ng\u01b0\u1eddi n\u00e0o \u0111\u00f3 c\u00f3 m\u1ed9t m\u1eb7t n\u00e0o \u0111\u00f3 t\u1ecf ra \u01b0u t\u00fa h\u01a1n ng\u01b0\u1eddi kh\u00e1c th\u00ec ng\u01b0\u1eddi \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0 th\u1ea7y v\u1ec1 ph\u01b0\u01a1ng di\u1ec7n \u0111\u00f3. \u00dd c\u1ee7a Kh\u1ed5ng T\u1eed c\u0169ng ch\u00ednh l\u00e0 nh\u01b0 v\u1eady.<\/p>\n\n\n\n<p>Ta chia t\u00e0i n\u0103ng c\u1ee7a ng\u01b0\u1eddi l\u00e0m ba ph\u01b0\u01a1ng di\u1ec7n; \u0111\u1ee9c, tr\u00ed, th\u1ec3. N\u1ebfu nh\u01b0 trong c\u1ea3 ba ph\u01b0\u01a1ng di\u1ec7n, Kh\u1ed5ng T\u1eed \u0111\u1ec1u thu\u1ed9c lo\u1ea1i \u01b0u t\u00fa; n\u00f3i c\u00e1ch kh\u00e1c trong s\u1ed1 ba ng\u01b0\u1eddi, Kh\u1ed5ng T\u1eed \u0111\u1ec1u l\u00e0 h\u00e0ng \u0111\u1ea7u, th\u00ec hai ng\u01b0\u1eddi kia kh\u00f4ng ai x\u1ee9ng \u0111\u00e1ng l\u00e0 th\u1ea7y c\u1ee7a Kh\u1ed5ng T\u1eed c\u1ea3. N\u1ebfu \u0111\u00e1nh gi\u00e1 t\u00e0i n\u0103ng c\u1ee7a Kh\u1ed5ng T\u1eed v\u1ec1 ba m\u1eb7t: \u0111\u1ee9c, tr\u00ed, th\u1ec3 th\u00ec c\u00f3 th\u1ec3 c\u00f3 33 = 27 c\u00e1ch ph\u00e2n lo\u1ea1i sau \u0111\u00e2y:<\/p>\n\n\n\n<p>Trong 27 lo\u1ea1i kh\u1ea3 n\u0103ng n\u00e0y th\u00ec Kh\u1ed5ng T\u1eed \u0111\u01b0\u1ee3c \u1edf h\u00e0ng \u0111\u1ea7u c\u1ea3 ba ph\u01b0\u01a1ng di\u1ec7n, ch\u1ec9 c\u00f3 m\u1ed9t lo\u1ea1i chi\u1ebfm 1\/27 c\u00f2n \u1edf 26 lo\u1ea1i kh\u00e1c Kh\u1ed5ng T\u1eed \u0111\u01b0\u1ee3c x\u1ebfp \u1edf h\u00e0ng \u0111\u1ea7u \u1edf m\u1ed9t s\u1ed1 m\u1eb7t m\u00e0 kh\u00f4ng ph\u1ea3i c\u1ea3 ba m\u1eb7t, trong c\u00e1c c\u00e1ch s\u1eafp x\u1ebfp th\u00ec c\u00f3 26 lo\u1ea1i nh\u01b0 v\u1eady t\u1ee9c chi\u1ebfm 26\/27 , nh\u01b0 v\u1eady trong s\u1ed1 2 ng\u01b0\u1eddi c\u00f9ng \u0111i ng\u01b0\u1eddi c\u00f3 t\u01b0 c\u00e1ch l\u00e0m th\u1ea7y<\/p>\n\n\n\n<p>Kh\u1ed5ng T\u1eed c\u00f3 kh\u1ea3 n\u0103ng (x\u00e1c su\u1ea5t) \u0111\u1ebfn 1\/27 \u224896,3%.<\/p>\n\n\n\n<p>C\u00f2n c\u00f3 c\u00e1ch t\u00ednh to\u00e1n kh\u00e1c \u0111\u1ec3 t\u00ednh c\u00e1c kh\u1ea3 n\u0103ng n\u00e0y. Kh\u1ea3 n\u0103ng \u0111\u1ec3 v\u1ec1 ph\u01b0\u01a1ng di\u1ec7n \u0110\u1ee9c, Kh\u1ed5ng T\u1eed x\u1ebfp h\u00e0ng \u0111\u1ea7u l\u00e0 1\/3, v\u1ec1 m\u1eb7t Tr\u00ed, kh\u1ea3 n\u0103ng \u0111\u1ec3 Kh\u1ed5ng T\u1eed \u0111\u01b0\u1ee3c x\u1ebfp \u1edf h\u00e0ng \u0111\u1ea7u l\u00e0 1\/3, v\u00ec v\u1eady \u1edf c\u1ea3 hai m\u1eb7t<\/p>\n\n\n\n<p>\u0110\u1ee9c v\u00e0 Tr\u00ed \u0111\u1ec3 Kh\u1ed5ng T\u1eed \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u1ebfp h\u00e0ng \u0111\u1ea7u th\u00ec kh\u1ea3 n\u0103ng c\u00f3 th\u1ec3 l\u00e0 1\/3 x 1\/3. L\u00ed lu\u1eadn t\u01b0\u01a1ng t\u1ef1 \u0111\u1ec3 c\u1ea3 ba m\u1eb7t: \u0110\u1ee9c, Tr\u00ed, Th\u1ec3, Kh\u1ed5ng T\u1eed \u0111\u1ec1u x\u1ebfp \u1edf h\u00e0ng \u0111\u1ea7u c\u00f3 kh\u1ea3 n\u0103ng l\u00e0 1\/3 x 1\/3 x 1\/3 = (1\/3)2.<\/p>\n\n\n\n<p>\u0110\u01b0\u01a1ng nhi\u00ean vi\u1ec7c ch\u00fang ta \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t ng\u01b0\u1eddi ch\u1ec9 d\u1ef1a v\u00e0o 3 m\u1eb7t l\u00e0 c\u00f2n qu\u00e1 s\u01a1 l\u01b0\u1ee3c. T\u1ee5c ng\u1eef c\u00f3 c\u00e2u \u201cC\u00f3 360 con \u0111\u01b0\u1eddng, \u0111i cho h\u1ebft ng\u1ea3 r\u1ed3i c\u0169ng tr\u1edf th\u00e0nh xu\u1ea5t ch\u00fang\u201d. Ta c\u0169ng th\u1eed chia t\u00e0i n\u0103ng c\u1ee7a ng\u01b0\u1eddi th\u00e0nh 360 ph\u01b0\u01a1ng di\u1ec7n. Ngo\u00e0i ra, Kh\u1ed5ng T\u1eed l\u00e0 m\u1ed9t <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc gi\u1ea3<\/a> l\u1edbn, n\u00ean v\u1edbi b\u1ea5t k\u00ec nh\u00f3m ba ng\u01b0\u1eddi n\u00e0o, kh\u1ea3 n\u0103ng \u0111\u1ec3 Kh\u1ed5ng<\/p>\n\n\n\n<p>T\u1eed x\u1ebfp \u1edf h\u00e0ng \u0111\u1ea7u kh\u00f4ng ch\u1ec9 \u1edf 1\/3. Ch\u00fang ta gi\u1ea3 thi\u1ebft v\u1edbi m\u1ed7i ng\u01b0\u1eddi b\u1ea5t k\u1ef3, kh\u1ea3 n\u0103ng \u0111\u1ec3 Kh\u1ed5ng T\u1eed nh\u01b0\u1eddng b\u01b0\u1edbc kh\u00f4ng l\u1edbn h\u01a1n 1%, n\u00f3i c\u00e1ch kh\u00e1c, v\u1edbi m\u1ed9t ph\u01b0\u01a1ng di\u1ec7n b\u1ea5t k\u00ec n\u00e0o \u0111\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ec3 anh ta thua Kh\u1ed5ng T\u1eed ph\u1ea3i \u0111\u1ebfn 99%. Ch\u00fang ta l\u1ea1i th\u1eed t\u00ednh to\u00e1n kh\u1ea3 n\u0103ng v\u1ec1 c\u00e2u n\u00f3i \u201cBa ng\u01b0\u1eddi c\u00f9ng \u0111i \u1eaft c\u00f3 ng\u01b0\u1eddi l\u00e0 th\u1ea7y ta\u201d. V\u1edbi hai ng\u01b0\u1eddi c\u00f9ng \u0111i kh\u1ea3 n\u0103ng \u0111\u1ec3 h\u1ecd kh\u00f4ng h\u01a1n Kh\u1ed5ng T\u1eed l\u00e0 99% x 99% = 98.01%.<\/p>\n\n\n\n<p>Trong 360 ph\u01b0\u01a1ng di\u1ec7n kh\u1ea3 n\u0103ng \u0111\u1ec3 hai ng\u01b0\u1eddi kia kh\u00f4ng h\u01a1n Kh\u1ed5ng T\u1eed l\u00e0 (98,01)360 = 0,07%. Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi hai ng\u01b0\u1eddi c\u00f2n l\u1ea1i, trong m\u1ed9t ph\u01b0\u01a1ng di\u1ec7n n\u00e0o \u0111\u00f3 \u0111\u1ec3 h\u1ecd h\u01a1n Kh\u1ed5ng T\u1eed l\u00e0 1 &#8211; (98,01)360 = 99,93%; n\u00ean v\u1edbi hai ng\u01b0\u1eddi c\u00f2n l\u1ea1i, trong m\u1ed9t ph\u01b0\u01a1ng di\u1ec7n n\u00e0o \u0111\u00f3 \u0111\u1ec3 h\u1ecd v\u01b0\u1ee3t Kh\u1ed5ng T\u1eed l\u00e0 99,93%.<\/p>\n\n\n\n<p>Ch\u00fang ta bi\u1ebft tuy c\u00e2u n\u00f3i \u201cBa ng\u01b0\u1eddi c\u00f9ng \u0111i \u1eaft c\u00f3 m\u1ed9t ng\u01b0\u1eddi l\u00e0 th\u1ea7y ta\u201d l\u00e0 c\u00e2u n\u00f3i khi\u00eam nh\u01b0\u1eddng c\u1ee7a Kh\u1ed5ng T\u1eed, nh\u01b0ng th\u1ef1c t\u1ebf c\u0169ng c\u00f3 nhi\u1ec1u \u00fd ngh\u0129a.<\/p>\n\n\n\n<p>T\u1eeb kho\u00e1: X\u00e1c su\u1ea5t.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ch\u1eafc c\u00e1c b\u1ea1n \u0111\u00e3 t\u1eebng nghe c\u00e2u n\u00f3i: \u201cBa ng\u01b0\u1eddi c\u00f9ng \u0111i v\u1edbi ta \u1eaft c\u00f3 ng\u01b0\u1eddi l\u00e0 th\u1ea7y ta\u201d. \u0110\u00f3 l\u00e0 c\u00e2u n\u00f3i trong s\u00e1ch \u201cLu\u1eadn ng\u1eef\u201d tr\u00edch l\u1eddi n\u00f3i c\u1ee7a Kh\u1ed5ng T\u1eed, m\u1ed9t h\u1ecdc gi\u1ea3 l\u1edbn th\u1eddi c\u1ed5 \u0111\u1ea1i. Tuy Kh\u1ed5ng T\u1eed l\u00e0 m\u1ed9t ng\u01b0\u1eddi c\u00f3 h\u1ecdc v\u1ea5n r\u1ea5t cao nh\u01b0ng \u00f4ng v\u1eabn [&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":[15,9],"tags":[],"class_list":["post-7613","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-toan-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7613","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=7613"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7613\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}