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{"id":6597,"date":"2016-11-22T03:17:38","date_gmt":"2016-11-22T03:17:38","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=6597"},"modified":"2016-11-22T03:17:38","modified_gmt":"2016-11-22T03:17:38","slug":"de-thi-giua-hoc-ki-2-lop-11-mon-toan-nam-2015-thpt-hai-hau","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/de-thi-giua-hoc-ki-2-lop-11-mon-toan-nam-2015-thpt-hai-hau\/","title":{"rendered":"\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu"},"content":{"rendered":"

\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu c\u00e1c em theo d\u00f5i chi ti\u1ebft b\u00ean d\u01b0\u1edbi:<\/p>\n

\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu<\/strong><\/h4>\n

C\u00e2u 3(<\/strong>3,0 \u0111i\u1ec3m<\/em>): \u00a0<\/strong>Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, SA = \u00a0v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi\u00a0 (ABCD). G\u1ecdi M v\u00e0 N l\u1ea7n l\u01b0\u1ee3t l\u00e0 trung \u0111i\u1ec3m c\u1ee7a SB v\u00e0 SD.<\/p>\n

 <\/p>\n

a) Ch\u1ee9ng minh r\u1eb1ng SBC v\u00e0 SCD l\u00e0 nh\u1eefng tam gi\u00e1c vu\u00f4ng.<\/p>\n

b) Ch\u1ee9ng minh MN vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (SAC).<\/p>\n

c) T\u00ednh g\u00f3c gi\u1eefa SC v\u1edbi (SAB),\u00a0 g\u00f3c gi\u1eefa MC v\u1edbi SA.<\/p>\n

\u00a0\u00a0<\/strong>C\u00e2u 4 <\/strong>(1,5 \u0111i\u1ec3m<\/em>): \u00a0\u00a0<\/strong><\/p>\n

a)\u00a0 Ch\u1ee9ng minh r\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh x \u2013 sin 2x -1 = 0 c\u00f3 \u00edt nh\u1ea5t m\u1ed9t nghi\u1ec7m .<\/p>\n

b)\u00a0 \u00a0Cho c\u1ea5p s\u1ed1 c\u1ed9ng : u1<\/sub>, u2<\/sub> , \u2026, un<\/sub> c\u00f3\u00a0 u1<\/sub> = 2, c\u00f4ng sai d = 3 v\u00e0 c\u1ea5p s\u1ed1 nh\u00e2n : v1<\/sub>, v2<\/sub> , \u2026vn<\/sub> c\u00f3 v1<\/sub> = 1 c\u00f4ng b\u1ed9i q = 2.<\/p>\n

T\u00ednh t\u1ed5ng\u00a0 S = u1<\/sub>v1<\/sub> + u2<\/sub>v2<\/sub> + \u2026 + un<\/sub>vn<\/sub> theo n ( v\u1edbi n l\u00e0 s\u1ed1 nghuy\u00ean d\u01b0\u01a1ng ).<\/p>\n

\"\"<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu c\u00e1c em theo d\u00f5i chi ti\u1ebft b\u00ean d\u01b0\u1edbi: \u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu C\u00e2u 3(3,0 \u0111i\u1ec3m): \u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[171],"tags":[],"yoast_head":"\n\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/de-thi-giua-hoc-ki-2-lop-11-mon-toan-nam-2015-thpt-hai-hau\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu\" \/>\n<meta property=\"og:description\" content=\"\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu c\u00e1c em theo d\u00f5i chi ti\u1ebft b\u00ean d\u01b0\u1edbi: \u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 2 l\u1edbp 11 m\u00f4n To\u00e1n n\u0103m 2015 \u2013 THPT H\u1ea3i H\u1eadu C\u00e2u 3(3,0 \u0111i\u1ec3m): \u00a0Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/de-thi-giua-hoc-ki-2-lop-11-mon-toan-nam-2015-thpt-hai-hau\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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