{"id":2288,"date":"2026-04-25T02:39:22","date_gmt":"2026-04-25T02:39:22","guid":{"rendered":"https:\/\/77.buffdemo.com\/index.php\/2026\/04\/25\/500-cau-bai-tap-bat-dang-thuc-chon-loc\/"},"modified":"2026-04-25T02:39:22","modified_gmt":"2026-04-25T02:39:22","slug":"500-cau-bai-tap-bat-dang-thuc-chon-loc","status":"publish","type":"post","link":"https:\/\/77.buffdemo.com\/index.php\/2026\/04\/25\/500-cau-bai-tap-bat-dang-thuc-chon-loc\/","title":{"rendered":"500 c\u00e2u b\u00e0i t\u1eadp b\u1ea5t \u0111\u1eb3ng th\u1ee9c ch\u1ecdn l\u1ecdc 10, 11, 12"},"content":{"rendered":"<div class=\"entry-content single-page\">\n<p>Chia s\u1ebb t\u00e0i li\u1ec7u 500 c\u00e2u b\u00e0i t\u1eadp b\u1ea5t \u0111\u1eb3ng th\u1ee9c ch\u1ecdn l\u1ecdc 10, 11, 12 c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft.<\/p>\n<div class=\"code-block code-block-2\" style=\"margin: 8px auto; text-align: center; display: block; clear: both;\">\n<div> <\/div>\n<\/div>\n<h2 class=\"wp-block-heading has-vivid-red-color has-text-color has-link-color wp-elements-7f49cb72d86141a2fd43fbca3428ac97\" id=\"h-n\u1ed9i-dung-tai-li\u1ec7u-500-cau-bai-t\u1eadp-b\u1ea5t-d\u1eb3ng-th\u1ee9c-ch\u1ecdn-l\u1ecdc-10-11-12\"><span class=\"ez-toc-section\" id=\"Noi_dung_tai_lieu_500_cau_bai_tap_bat_dang_thuc_chon_loc_10_11_12\"><\/span>N\u1ed9i dung t\u00e0i li\u1ec7u 500 c\u00e2u b\u00e0i t\u1eadp b\u1ea5t \u0111\u1eb3ng th\u1ee9c ch\u1ecdn l\u1ecdc 10, 11, 12<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>500 b\u00e0i to\u00e1n thu\u1ed9c nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n<ul class=\"wp-block-list\">\n<li>B\u1ea5t \u0111\u1eb3ng th\u1ee9c \u0111\u1ea1i s\u1ed1 c\u01a1 b\u1ea3n (Cauchy, Bunhiacopxki).<\/li>\n<li>B\u1ea5t \u0111\u1eb3ng th\u1ee9c c\u00f3 \u0111i\u1ec1u ki\u1ec7n r\u00e0ng bu\u1ed9c gi\u1eefa c\u00e1c bi\u1ebfn (t\u1ed5ng, t\u00edch, c\u00e1c bi\u1ebfn d\u01b0\u01a1ng, kh\u00f4ng \u00e2m, thu\u1ed9c \u0111o\u1ea1n).<\/li>\n<li>B\u00e0i to\u00e1n t\u00ecm gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t, nh\u1ecf nh\u1ea5t c\u1ee7a bi\u1ec3u th\u1ee9c.<\/li>\n<li>B\u1ea5t \u0111\u1eb3ng th\u1ee9c li\u00ean quan \u0111\u1ebfn c\u1ea1nh tam gi\u00e1c.<\/li>\n<li>V\u00e0 nhi\u1ec1u d\u1ea1ng b\u00e0i kh\u00e1c<\/li>\n<\/ul>\n<p><strong>C\u1ea5u tr\u00fac b\u00e0i to\u00e1n:<\/strong>\u00a0M\u1ed7i b\u00e0i to\u00e1n \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y d\u01b0\u1edbi d\u1ea1ng \u0111\u1ec1 b\u00e0i v\u00e0 sau \u0111\u00f3 l\u00e0 l\u1eddi gi\u1ea3i chi ti\u1ebft (c\u00f3 nhi\u1ec1u c\u00e1ch gi\u1ea3i cho m\u1ed9t s\u1ed1 b\u00e0i).<\/p>\n<p><strong>C\u00e1c k\u1ef9 thu\u1eadt ch\u1ee9ng minh b\u1ea5t \u0111\u1eb3ng th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>S\u1eed d\u1ee5ng b\u1ea5t \u0111\u1eb3ng th\u1ee9c Cauchy (C\u00f4-si) v\u00e0 c\u00e1c d\u1ea1ng suy r\u1ed9ng.<\/li>\n<li>S\u1eed d\u1ee5ng b\u1ea5t \u0111\u1eb3ng th\u1ee9c Bunhiacopxki (Schwarz) v\u00e0 d\u1ea1ng ph\u00e2n th\u1ee9c.<\/li>\n<li>Bi\u1ebfn \u0111\u1ed5i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/li>\n<li>\u0110\u1ed5i bi\u1ebfn.<\/li>\n<li>K\u1ef9 thu\u1eadt d\u1ed3n bi\u1ebfn (trong m\u1ed9t s\u1ed1 b\u00e0i ph\u1ee9c t\u1ea1p).<\/li>\n<li>K\u1ef9 thu\u1eadt \u0111i\u1ec3m r\u01a1i.<\/li>\n<li>V\u00e0 nhi\u1ec1u k\u1ef9 thu\u1eadt kh\u00e1c<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><strong>Xem tr\u01b0\u1edbc t\u00e0i li\u1ec7u:<\/strong><\/p>\n<p class=\"has-text-align-center\"><iframe loading=\"lazy\" allow=\"autoplay\" height=\"480\" src=\"https:\/\/drive.google.com\/file\/d\/1Lhqp0Ujp5ygzAHyArR5C6S3l0aUcwQQQ\/preview\" width=\"640\"><\/iframe><\/p>\n<h2 class=\"wp-block-heading has-vivid-red-color has-text-color has-link-color wp-elements-9a94a73ac8d6e24ce75465a41d6d7cf0\" id=\"h-t\u1ea3i-tai-li\u1ec7u-500-cau-bai-t\u1eadp-b\u1ea5t-d\u1eb3ng-th\u1ee9c-ch\u1ecdn-l\u1ecdc-10-11-12\"><span class=\"ez-toc-section\" id=\"Tai_tai_lieu_500_cau_bai_tap_bat_dang_thuc_chon_loc_10_11_12\"><\/span>T\u1ea3i t\u00e0i li\u1ec7u 500 c\u00e2u b\u00e0i t\u1eadp b\u1ea5t \u0111\u1eb3ng th\u1ee9c ch\u1ecdn l\u1ecdc 10, 11, 12<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 t\u1ea3i t\u00e0i li\u1ec7u \u00f4n t\u1eadp mi\u1ec5n ph\u00ed \u1edf \u0111\u00e2y nh\u00e9<\/p>\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-luminous-vivid-orange-background-color has-text-color has-background has-link-color has-text-align-center wp-element-button\" href=\"https:\/\/drive.google.com\/drive\/folders\/1HT7KMw9LSxmmhSlogMnCpbbceLgiUhnu?usp=sharing\" rel=\"noreferrer noopener nofollow\" target=\"_blank\"><strong>T\u1ea2I T\u00c0I LI\u1ec6U (\u0110\u1ec0 + \u0110\u00c1P \u00c1N)<\/strong><\/a><\/div>\n<\/div>\n<p>Tham kh\u1ea3o:<strong><a href=\"https:\/\/tailieuonthi.org\/toan-thuc-te-chuyen-de-xac-suat-co-dieu-kien\/\" rel=\"noreferrer noopener\" target=\"_blank\"> To\u00e1n th\u1ef1c t\u1ebf chuy\u00ean \u0111\u1ec1 X\u00e1c su\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n<\/a><\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Chia s\u1ebb t\u00e0i li\u1ec7u 500 c\u00e2u b\u00e0i t\u1eadp b\u1ea5t \u0111\u1eb3ng th\u1ee9c ch\u1ecdn l\u1ecdc 10, 11, 12 c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft. N\u1ed9i dung t\u00e0i li\u1ec7u 500 c\u00e2u b\u00e0i t\u1eadp b\u1ea5t \u0111\u1eb3ng th\u1ee9c ch\u1ecdn l\u1ecdc 10, 11, 12 500 b\u00e0i to\u00e1n thu\u1ed9c nhi\u1ec1u d\u1ea1ng kh\u00e1c nhau, bao g\u1ed3m: B\u1ea5t \u0111\u1eb3ng th\u1ee9c \u0111\u1ea1i s\u1ed1 c\u01a1 b\u1ea3n (Cauchy, [&#8230;]\n","protected":false},"author":1,"featured_media":2287,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,24,25,26],"tags":[],"class_list":["post-2288","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tai-lieu-toan","category-toan-10","category-toan-11","category-toan-12"],"_links":{"self":[{"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/2288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/comments?post=2288"}],"version-history":[{"count":0,"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/2288\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/media\/2287"}],"wp:attachment":[{"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/media?parent=2288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/categories?post=2288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/77.buffdemo.com\/index.php\/wp-json\/wp\/v2\/tags?post=2288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}