{"id":19720,"date":"2025-07-07T09:30:06","date_gmt":"2025-07-07T02:30:06","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19720"},"modified":"2025-07-08T07:34:55","modified_gmt":"2025-07-08T00:34:55","slug":"dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0\/","title":{"rendered":"\u0110\u1ea1o h\u00e0m b\u1eb1ng 0 l\u00e0 g\u00ec? L\u00e0m g\u00ec khi gi\u1ea3i b\u00e0i t\u1eadp v\u1edbi \u0111\u1ea1o h\u00e0m f(x) = 0"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0\/#Khai_niem_phai_sinh_cua_so_0_la_gi\" >Kh\u00e1i ni\u1ec7m ph\u00e1i sinh c\u1ee7a s\u1ed1 0 l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0\/#Tai_sao_dao_ham_cua_bat_ky_hang_so_nao_bang_khong\" >T\u1ea1i sao \u0111\u1ea1o h\u00e0m c\u1ee7a b\u1ea5t k\u1ef3 h\u1eb1ng s\u1ed1 n\u00e0o b\u1eb1ng kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0\/#Chuc_nang_o_vi_tri_0_co_duoc_xac_dinh_khong\" >Ch\u1ee9c n\u0103ng \u1edf v\u1ecb tr\u00ed 0 c\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0\/#Mot_so_bai_tap_ve_chung_minh_dao_ham_bang_0\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 ch\u1ee9ng minh \u0111\u1ea1o h\u00e0m b\u1eb1ng 0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/dao-ham-bang-0-la-gi-lam-gi-khi-giai-bai-tap-voi-dao-ham-fx-0\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>\u0110\u1ea1o h\u00e0m c\u1ee7a 0 kh\u00e1 \u0111\u1eb7c bi\u1ec7t trong qu\u00e1 tr\u00ecnh t\u00ednh to\u00e1n \u0111\u1ea1o h\u00e0m. Do \u0111\u00f3, sinh vi\u00ean c\u0169ng c\u1ea7n hi\u1ec3u c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 t\u00ednh to\u00e1n ch\u00fang m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n<p>                                                                    <\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a kh\u1ec9<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 tuy\u1ebfn h\u1ecdc h\u1ecdc cho tr\u1ebb em.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n *Vui l\u00f2ng ki\u1ec3m tra s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u01a1n 2.000 t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng Anh \u0111\u1ec3 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng Anh t\u1ed1t &#8211; ti\u1ebfng Anh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng EQ &amp; Vi\u1ec7t Nam *B\u1ea1n ch\u01b0a ch\u1ecdn b\u1ea5t k\u1ef3 m\u1ee5c n\u00e0o! \u0110\u0103ng k\u00fd t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Khai_niem_phai_sinh_cua_so_0_la_gi\"><\/span>Kh\u00e1i ni\u1ec7m ph\u00e1i sinh c\u1ee7a s\u1ed1 0 l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u1ee7 \u0111\u1ec1 \u0110\u1ea1o gi\u00e1o, khi m\u1ed9t h\u00e0m t\u00edch c\u1ef1c (khi h\u00e0m t\u0103ng) v\u00e0 sau \u0111\u00f3 \u0111\u1ed9t nhi\u00ean bi\u1ebfn th\u00e0nh m\u1ed9t h\u00e0m \u00e2m (h\u00e0m gi\u1ea3m), \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 n\u00f3 \u0111\u00e3 \u0111i qua v\u1ecb tr\u00ed c\u00f3 h\u00e0m \u0111\u1ea1t \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb t\u1ed1i \u0111a, \u0111\u00e2y c\u0169ng l\u00e0 v\u1ecb tr\u00ed c\u1ee7a \u0111\u1ea1o h\u00e0m b\u1eb1ng 0.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, trong ph\u00e2n t\u00edch, s\u1ed1 0 \u0111\u01b0\u1ee3c coi l\u00e0 h\u1eb1ng s\u1ed1, v\u00ec v\u1eady khi d\u1eabn xu\u1ea5t kh\u00f4ng \u0111\u1ed5i b\u1eb1ng 0.<\/p>\n<p dir=\"ltr\" style=\"line-height: 1.7999999999999998;text-align: justify;margin-top: 12pt;margin-bottom: 12pt\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dao-ham-bang-0-1a.png\" alt=\"\u0110\u1ea1o h\u00e0m l\u00e0 0 khi h\u00e0m \u0111\u1ea1t \u0111\u1ebfn gi\u00e1 tr\u1ecb t\u1ed1i \u0111a. (\u1ea2nh: Tuoi Tre b\u00e1o)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tai_sao_dao_ham_cua_bat_ky_hang_so_nao_bang_khong\"><\/span>T\u1ea1i sao \u0111\u1ea1o h\u00e0m c\u1ee7a b\u1ea5t k\u1ef3 h\u1eb1ng s\u1ed1 n\u00e0o b\u1eb1ng kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, \u0111\u1ea1o h\u00e0m c\u1ee7a h\u00e0m y v\u1edbi bi\u1ebfn x trong y l\u00e0 vi\u1ec7c xem x\u00e9t s\u1ef1 thay \u0111\u1ed5i c\u1ee7a x s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i c\u1ee7a Y. t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00f4ng th\u1ee9c dy\/dx.<\/p>\n<p dir=\"ltr\" style=\"line-height: 1.7999999999999998;text-align: justify;margin-top: 12pt;margin-bottom: 12pt\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dao-ham-bang-0-2a.png\" alt=\"Trong \u0111\u1ea1o h\u00e0m, x thay \u0111\u1ed5i, y c\u0169ng s\u1ebd \u0111\u01b0\u1ee3c thay \u0111\u1ed5i. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng s\u1ef1 thay \u0111\u1ed5i c\u1ee7a y s\u1ebd ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o s\u1ef1 thay \u0111\u1ed5i c\u1ee7a bi\u1ebfn X.<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, gi\u1ea3 s\u1eed ch\u00fang ta c\u00f3 h\u00e0m y = x, t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, ch\u00fang ta \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c cho h\u00e0m c\u1ee7a h\u00e0m n\u00e0y t\u01b0\u01a1ng \u1ee9ng v\u1edbi y &#039;= 1. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">X t\u0103ng l\u00ean 1 \u0111\u01a1n v\u1ecb, y c\u0169ng s\u1ebd t\u0103ng 1 \u0111\u01a1n v\u1ecb<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">X gi\u1ea3m 1 \u0111\u01a1n v\u1ecb, y c\u0169ng s\u1ebd gi\u1ea3m 1 \u0111\u01a1n v\u1ecb.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Trong tr\u01b0\u1eddng h\u1ee3p th\u1ee9 hai, gi\u1ea3 s\u1eed ch\u00fang ta c\u00f3 h\u00e0m y = 2x, khi \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c ph\u00e1i sinh c\u1ee7a h\u00e0m n\u00e0y, ch\u00fang ta s\u1ebd l\u00e0 y &#039;= 2. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">X t\u0103ng th\u00eam 1 \u0111\u01a1n v\u1ecb, y t\u0103ng l\u00ean 2 l\u1ea7n x<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">X gi\u1ea3m 1 \u0111\u01a1n v\u1ecb, y gi\u1ea3m 2 l\u1ea7n x<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Th\u00f4ng qua hai tr\u01b0\u1eddng h\u1ee3p, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng X thay \u0111\u1ed5i, y c\u0169ng s\u1ebd thay \u0111\u1ed5i.<\/p>\n<p dir=\"ltr\">V\u00e0 tr\u01b0\u1eddng h\u1ee3p y = c (c l\u00e0 kh\u00f4ng \u0111\u1ed5i). T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, gi\u00e1 tr\u1ecb c\u1ee7a anh ta s\u1ebd kh\u00f4ng thay \u0111\u1ed5i, c\u0169ng nh\u01b0 lu\u00f4n b\u1eb1ng v\u1edbi gi\u00e1 tr\u1ecb c\u1ee7a h\u1eb1ng s\u1ed1 c.<\/p>\n<p dir=\"ltr\">Nh\u01b0 l\u00fac \u0111\u1ea7u, ch\u00fang t\u00f4i c\u0169ng l\u00e0m cho r\u1eb1ng b\u1ea3n ch\u1ea5t c\u1ee7a \u0111\u1ea1o h\u00e0m l\u00e0 s\u1ef1 xem x\u00e9t v\u1ec1 m\u1ed1i quan h\u1ec7 c\u1ee7a nh\u1eefng thay \u0111\u1ed5i c\u1ee7a hai \u0111\u1ea1i l\u01b0\u1ee3ng \u1edf tr\u00ean. Nh\u01b0ng y b\u1eb1ng c, ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 thay \u0111\u1ed5i, v\u00ec v\u1eady s\u1ebd kh\u00f4ng c\u00f3 m\u1ed1i quan h\u1ec7. <\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, b\u1ea5t k\u1ef3 h\u1eb1ng s\u1ed1 n\u00e0o, \u0111\u1ea1o h\u00e0m c\u1ee7a n\u00f3 lu\u00f4n b\u1eb1ng kh\u00f4ng.<\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chuc_nang_o_vi_tri_0_co_duoc_xac_dinh_khong\"><\/span>Ch\u1ee9c n\u0103ng \u1edf v\u1ecb tr\u00ed 0 c\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tr\u00ean th\u1ef1c t\u1ebf, \u0111\u1ea1o h\u00e0m t\u1ea1i v\u1ecb tr\u00ed 0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh khi \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n \u0111\u1ea1o h\u00e0m b\u00ecnh th\u01b0\u1eddng ngay t\u1ea1i v\u1ecb tr\u00ed t\u01b0\u01a1ng \u1ee9ng l\u00e0 x = 0 nh\u01b0 sau:<\/p>\n<p dir=\"ltr\" style=\"line-height: 1.7999999999999998;text-align: justify;margin-top: 12pt;margin-bottom: 12pt\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dao-ham-bang-0-3a.png\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, khi \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c ch\u1ee9c n\u0103ng c\u1ee7a v\u1ecb tr\u00ed c\u1ee7a v\u1ecb tr\u00ed x = 0, k\u1ebft qu\u1ea3 c\u1ee7a n\u00f3 v\u1eabn b\u1eb1ng 0. \u0110i\u1ec1u n\u00e0y c\u0169ng x\u00e1c nh\u1eadn r\u00f5 r\u00e0ng h\u01a1n khi x = 0, kh\u00f4ng l\u00e0m cho ch\u1ee9c n\u0103ng thay \u0111\u1ed5i.<\/p>\n<p dir=\"ltr\">V\u1ec1 h\u00ecnh h\u1ecdc, \u0111\u01b0\u1eddng ti\u1ebfp tuy\u1ebfn t\u1ea1i v\u1ecb tr\u00ed x = 0 c\u0169ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng tr\u00f9ng v\u1edbi tr\u1ee5c OX c\u1ee7a h\u00e0m.<\/p>\n<p dir=\"ltr\" style=\"line-height: 1.7999999999999998;text-align: justify;margin-top: 12pt;margin-bottom: 12pt\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dao-ham-bang-0-4a.png\" alt=\"\" width=\"100%\"><\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #FBEEB8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5189%\">\n<p style=\"text-align: center\">Gi\u00fap con b\u1ea1n h\u1ecdc to\u00e1n k\u1ebft h\u1ee3p v\u1edbi ti\u1ebfng Anh si\u00eau ti\u1ebft ki\u1ec7m ch\u1ec9 tr\u00ean \u1ee9ng d\u1ee5ng to\u00e1n h\u1ecdc kh\u1ec9. V\u1edbi n\u1ed9i dung gi\u1ea3ng d\u1ea1y v\u1ea1n n\u0103ng \u0111\u1ec3 gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy n\u00e3o b\u1ed9 v\u00e0 ng\u00f4n ng\u1eef to\u00e0n di\u1ec7n ch\u1ec9 v\u1edbi kho\u1ea3ng 2k\/ng\u00e0y.<\/p>\n<p style=\"text-align: center\">\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/timhieungay.png\" alt=\"\" width=\"185\" height=\"38\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_ve_chung_minh_dao_ham_bang_0\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 ch\u1ee9ng minh \u0111\u1ea1o h\u00e0m b\u1eb1ng 0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u1ef1a tr\u00ean ki\u1ebfn \u200b\u200bth\u1ee9c tr\u00ean, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp cho tr\u1ebb em x\u00e1c \u0111\u1ecbnh ch\u1ee9c n\u0103ng n\u00e0o l\u00e0 ch\u1ee9c n\u0103ng khi \u0111\u1ea1o h\u00e0m s\u1ebd b\u1eb1ng kh\u00f4ng. C\u1ee5 th\u1ec3:<\/p>\n<p dir=\"ltr\" style=\"line-height: 1.7999999999999998;text-align: justify;margin-top: 12pt;margin-bottom: 12pt\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dao-ham-bang-0-5a.png\" alt=\"(Ngu\u1ed3n: T\u00f3m t\u1eaft)\" width=\"100%\"><\/p>\n<p>Xem th\u00eam: C\u00f4ng th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p cho \u1ee9ng d\u1ee5ng ch\u1ee9c n\u0103ng trong v\u1eadt l\u00fd m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 kh\u00f4ng bi\u1ebft!<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft th\u00f4ng tin gi\u1ea3i th\u00edch ch\u1ee9c n\u0103ng c\u1ee7a h\u00e0m b\u1eb1ng kh\u00f4ng.<\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #FBEEB8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5189%\">\n<p style=\"text-align: center\">Gi\u1ea3i ph\u00e1p n\u00e0y gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy v\u00e0 ng\u00f4n ng\u1eef to\u00e0n di\u1ec7n v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m to\u00e1n h\u1ecdc + Vi\u1ec7t Nam + ti\u1ebfng Anh v\u1edbi gi\u1ea3m gi\u00e1 t\u1edbi 50% ng\u00e0y h\u00f4m nay.<\/p>\n<p style=\"text-align: center\">\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia.monkeyuni.net\/upload\/web\/img\/button_dang-ky-ngay-1.png\" alt=\"\" width=\"185\" height=\"25\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p>                                    Ngu\u1ed3n tham chi\u1ebfu<\/p>\n<p>T\u1ea1i sao \u0111\u1ea1o h\u00e0m \u0111\u1ea7u ti\u00ean c\u1ee7a m\u1ed9t h\u00e0m b\u1eb1ng 0, hi\u1ec3n th\u1ecb t\u1ed1i thi\u1ec3u c\u1ee7a m\u1ed9t h\u00e0m? &#8211; Truy c\u1eadp ng\u00e0y 17 th\u00e1ng 6 n\u0103m 2022<\/p>\n<p>https:\/\/www.quora.com\/why-does-the-first-erivative-of-aa-function-hoqual-ero-showing-showing-minimum-wof-aa-function<\/p>\n<p>Ph\u00e1i sinh cho kh\u00f4ng, n\u00f3 c\u00f3 ngh\u0129a l\u00e0 g\u00ec? &#8211; Truy c\u1eadp ng\u00e0y 17 th\u00e1ng 6 n\u0103m 2022<\/p>\n<p>https:\/\/math.stackxchange.com\/questions\/1353453\/derivative-to-zero-what-des-it-intirtent<\/p>\n<p>N\u00f3 c\u00f3 ngh\u0129a l\u00e0 \u0111\u1ea1o h\u00e0m c\u1ee7a m\u1ed9t h\u00e0m b\u1eb1ng kh\u00f4ng? &#8211; Truy c\u1eadp ng\u00e0y 17 th\u00e1ng 6 n\u0103m 2022<\/p>\n<p>http:<\/p>\n<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ea1o h\u00e0m c\u1ee7a 0 kh\u00e1 \u0111\u1eb7c bi\u1ec7t trong qu\u00e1 tr\u00ecnh t\u00ednh to\u00e1n \u0111\u1ea1o h\u00e0m. Do \u0111\u00f3, sinh vi\u00ean c\u0169ng c\u1ea7n hi\u1ec3u c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 t\u00ednh to\u00e1n ch\u00fang m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c nh\u1ea5t. H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-19720","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=19720"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19720\/revisions"}],"predecessor-version":[{"id":24991,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19720\/revisions\/24991"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}