{"id":692,"date":"2019-10-16T07:00:02","date_gmt":"2019-10-16T00:00:02","guid":{"rendered":"http:\/\/www.truyenthong.edu.vn\/?p=692"},"modified":"2019-10-16T07:00:02","modified_gmt":"2019-10-16T00:00:02","slug":"mo-hinh-sketchpad-day-dinh-nghia-elip","status":"publish","type":"post","link":"https:\/\/truyenthong.edu.vn\/sanpham\/2019\/10\/16\/mo-hinh-sketchpad-day-dinh-nghia-elip\/","title":{"rendered":"M\u00f4 h\u00ecnh Sketchpad d\u1ea1y \u0111\u1ecbnh ngh\u0129a Elip"},"content":{"rendered":"\n<p>1\/ V\u00ed d\u1ee5 v\u1ec1 \u0111\u01b0\u1eddng elip :qu\u1ef9 \u0111\u1ea1o khi tr\u00e1i \u0111\u1ea5t quay quanh m\u1eb7t tr\u1eddi l\u00e0 \u0111\u01b0\u1eddng elip<\/p>\n\n\n<p>2\/ \u0110\u1ecbnh ngh\u0129a \u0111\u01b0\u1eddng elip:G\u1ecdi v\u1ecb tr\u00ed \u0111\u1ea7u b\u00fat ch\u00ec l\u00e0 M.Khi M thay \u0111\u1ed5i th\u00ec MF[1]+MF[2] kh\u00f4ng thay \u0111\u1ed5i .Qu\u1ef9 t\u00edch c\u1ee7a M ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng elip<\/p>\n\n\n<!--more-->\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/gdurl.com\/i0fy\" alt=\"\"\/><figcaption>D\u1ef1ng h\u00ecnh Elip<\/figcaption><\/figure><\/div>\n\n\n<p>3\/C\u1ee7ng c\u1ed1 \ud83d\ude41 B\u00e0i t\u1eadp 59 trang 110 s\u00e1ch b\u00e0i t\u1eadp h\u00ecnh h\u1ecdc 10 )\u00a0<\/p>\n\n\n<p>&nbsp;Cho \u0111\u01b0\u1eddng tr\u00f2n (C[1]) t\u00e2m A,b\u00e1n k\u00ednh R v\u00e0 \u0111\u01b0\u1eddng tr\u00f2n (C[2]) t\u00e2m B, b\u00e1n k\u00ednh r .Bi\u1ebft \u0111\u01b0\u1eddng tr\u00f2n (C[2]) n\u1eb1m trong \u0111\u01b0\u1eddng tr\u00f2n (C[1]) v\u00e0 t\u00e2m c\u1ee7a hai \u0111\u01b0\u1eddng tr\u00f2n kh\u00f4ng tr\u00f9ng nhau.T\u00ecm t\u1eadp h\u1ee3p t\u00e2m c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng tr\u00f2n ti\u1ebfp x\u00fac trong v\u1edbi (C[1]) v\u00e0 ti\u1ebfp x\u00fac ngo\u00e0i v\u1edbi (C[2])<\/p>\n\n\n<p>-Ta d\u1ef1 \u0111o\u00e1n t\u1eadp h\u1ee3p t\u00e2m I l\u00e0 \u0111\u01b0\u1eddng elip c\u00f3 ti\u00eau \u0111i\u1ec3m l\u00e0 A,B v\u00e0 c\u00f3 \u0111\u1ed9 d\u00e0i tr\u1ee5c l\u1edbn l\u00e0 2a=R+r.<\/p>\n\n\n<p>-T\u00ednh to\u00e1n ta c\u00f3 a, b \u2192 d\u1ef1ng elip (E).<\/p>\n\n\n<p>-L\u1ea5y \u0111i\u1ec3m I n\u1eb1m tr\u00ean elip (E).AI c\u1eaft \u0111\u01b0\u1eddng tr\u00f2n (A) t\u1ea1i N.BI c\u1eaft \u0111\u01b0\u1eddng tr\u00f2n (B) t\u1ea1i M.<\/p>\n\n\n<p>-\u0110\u01b0\u1eddng tr\u00f2n t\u00e2m I \u0111i qua M ,N ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng tr\u00f2n ti\u1ebfp x\u00fac trong v\u1edbi \u0111\u01b0\u1eddng tr\u00f2n (A) v\u00e0 ti\u1ebfp x\u00fac ngo\u00e0i v\u1edbi \u0111\u01b0\u1eddng tr\u00f2n (B) .<\/p>\n\n\n<p>-Cho I ch\u1ea1y ta s\u1ebd th\u1ea5y qu\u1ef9 t\u00edch<\/p>\n\n\n<p>Th\u00f4ng tin v\u1ec1 s\u1ea3n ph\u1ea9m:<\/p>\n\n\n<ul class=\"wp-block-list\"><li>H\u1ecdc ph\u1ea7n: \u1ee8ng d\u1ee5ng CNTT&amp;TT trong Gi\u00e1o d\u1ee5c To\u00e1n<\/li><li>N\u0103m: 2011<\/li><li>T\u00e1c gi\u1ea3:\u00a0D\u01b0\u01a1ng Th\u1ecb Qu\u1ef3nh Ch\u00e2u, Tr\u1ea7n Kh\u00e1nh Anh, Nguy\u1ec5n Th\u1ecb B\u00ecnh, H\u00e0 Th\u1ecb Nh\u01b0 \u00dd<\/li><li>T\u1ea3i v\u1ec1 (gsp):\u00a0<a href=\"https:\/\/drive.google.com\/file\/d\/1dtQXv8-KlkJZUkAQbGjMYHQmmxlDFD7T\/view?usp=sharing\">M\u00f4 h\u00ecnh d\u1ea1y h\u1ecdc Elip<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1\/ V\u00ed d\u1ee5 v\u1ec1 \u0111\u01b0\u1eddng elip :qu\u1ef9 \u0111\u1ea1o khi tr\u00e1i \u0111\u1ea5t quay quanh m\u1eb7t tr\u1eddi l\u00e0 \u0111\u01b0\u1eddng elip 2\/ \u0110\u1ecbnh ngh\u0129a \u0111\u01b0\u1eddng elip:G\u1ecdi v\u1ecb tr\u00ed \u0111\u1ea7u b\u00fat ch\u00ec l\u00e0 M.Khi M thay \u0111\u1ed5i th\u00ec MF[1]+MF[2] kh\u00f4ng thay \u0111\u1ed5i .Qu\u1ef9 t\u00edch c\u1ee7a M ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng elip<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[59,133],"class_list":["post-692","post","type-post","status-publish","format-standard","hentry","category-ung-dung-ict-trong-giao-duc-toan","tag-elip","tag-sketchpad"],"_links":{"self":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts\/692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/comments?post=692"}],"version-history":[{"count":0,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts\/692\/revisions"}],"wp:attachment":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/media?parent=692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/categories?post=692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/tags?post=692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}