Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n<\/p>\n<\/div>\n
C\u00e2u 6 (1,0 \u0111i\u1ec3m).<\/strong><\/p>\n Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy, cho h\u00ecnh vu\u00f4ng ABCD c\u00f3 \u0111\u1ec9nh A(-1;2). G\u1ecdi N l\u00e0 trung \u0111i\u1ec3m c\u1ee7a c\u1ea1nh CD. \u0110\u01b0\u1eddng th\u1eb3ng BN c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh 2x + y \u2013 8 = 0. T\u00ecm t\u1ecda \u0111\u1ed9 c\u00e1c \u0111\u1ec9nh B, C v\u00e0 D c\u1ee7a h\u00ecnh vu\u00f4ng bi\u1ebft \u0111\u1ec9nh B c\u00f3 ho\u00e0nh \u0111\u1ed9 l\u1edbn h\u01a1n 2.<\/p>\n C\u00e2u 8 (1,0 \u0111i\u1ec3m).<\/strong><\/p>\n Cho hai s\u1ed1 th\u1ef1c x, y th\u1ecfa m\u00e3nx<\/em><\/p>\n + 16y<\/em><\/p>\n + (2xy<\/em>+ 1)<\/p>\n = 2. Ch\u1ee9ng minh r\u1eb1ngx<\/em>(x<\/em><\/p>\n + 3) + 2y<\/em>(4y<\/em><\/p>\n + 3) \u2265 -4<\/p>\n <\/p>\n<\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" Tham kh\u1ea3o \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia 2016 c\u1ee7a tr\u01b0\u1eddng THPT Kim Li\u00ean, S\u1edf GD&\u0110T H\u00e0 N\u1ed9i m\u00f4n To\u00e1n d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 6 (1,0 \u0111i\u1ec3m). Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy, cho h\u00ecnh vu\u00f4ng ABCD c\u00f3 \u0111\u1ec9nh A(-1;2). G\u1ecdi N l\u00e0 trung […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[28],"tags":[],"yoast_head":"\n