\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m cao trong k\u1ef3 thi THPT Qu\u1ed1c gia s\u1eafp t\u1edbi, th\u00ed sinh c\u1ea7n n\u1eafm ch\u1eafc ki\u1ebfn th\u1ee9c v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp \u0111\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng c\u00e2u h\u1ecfi kh\u00f3 nh\u1ea5t c\u1ee7a \u0111\u1ec1 b\u00e0i.<\/p>\n

Theo c\u1ea5u tr\u00fac \u0111\u1ec1 thi, m\u1ee9c \u0111\u1ed9 t\u1eeb d\u1ec5 \u0111\u1ebfn kh\u00f3 s\u1ebd \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u0103ng d\u1ea7n theo s\u1ed1 l\u01b0\u1ee3ng c\u00e2u h\u1ecfi. Nh\u01b0 v\u1eady 3 c\u00e2u h\u1ecfi kh\u00f3 nh\u1ea5t c\u1ee7a \u0111\u1ec1 b\u00e0i\u00a0<\/a>s\u1ebd r\u01a1i v\u00e0o c\u00e2u 8, 9, 10 \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e2u 10. Trong \u0111\u00f3, c\u00e1c d\u1ea1ng b\u00e0i th\u01b0\u1eddng xuy\u00ean xu\u1ea5t hi\u1ec7n g\u1ed3m:<\/p>\n

C\u00e2u 8:<\/strong> Th\u00f4ng th\u01b0\u1eddng s\u1ebd l\u00e0 b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc gi\u1ea3i t\u00edch trong m\u1eb7t ph\u1eb3ng h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9 OXY. Theo nh\u01b0 xu h\u01b0\u1edbng ra \u0111\u1ec1 nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y th\u00ec c\u00e2u h\u1ecfi th\u01b0\u1eddng y\u00eau c\u1ea7u h\u1ecdc sinh t\u1eeb h\u00ecnh v\u1ebd ph\u00e1t hi\u1ec7n ra m\u1ed9t t\u00ednh ch\u1ea5t \u0111\u1eb7c bi\u1ec7t nh\u01b0 quan h\u1ec7 vu\u00f4ng g\u00f3c, song song\u2026 r\u1ed3i ch\u1ee9ng minh t\u00ednh ch\u1ea5t n\u00e0y.<\/p>\n

\u0110\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c d\u1ea1ng b\u00e0i n\u00e0y, trong qu\u00e1 tr\u00ecnh \u00f4n t\u1eadp, th\u00ed sinh n\u00ean \u00f4n l\u1ea1i nh\u1eefng ki\u1ebfn th\u1ee9c h\u00ecnh h\u1ecdc c\u1ee7a l\u1edbp 9 v\u00e0 l\u1edbp 10 \u0111\u1ec3 c\u00f3 th\u1ec3 nh\u1eadn ra c\u00e1c t\u00ednh ch\u1ea5t h\u00ecnh h\u1ecdc c\u1ee7a b\u00e0i to\u00e1n. \u0110\u1ed3ng th\u1eddi c\u1ea7n h\u1ecdc \u0111\u01b0\u1ee3c c\u00e1ch khai tri\u1ec3n b\u00e0i to\u00e1n, ch\u1ee9 kh\u00f4ng ph\u1ea3i h\u1ecdc thu\u1ed9c t\u00ednh ch\u1ea5t c\u00f3 s\u1eb5n c\u1ee7a h\u00ecnh v\u1ebd, nh\u01b0 v\u1eady s\u1ebd b\u1ecb \u0111\u1ed9ng v\u00e0 hoang mang.<\/p>\n

<\/u>C\u00e2u 9:<\/strong> L\u00e0 m\u1ed9t c\u00e2u v\u1ec1 gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh, h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh ho\u1eb7c b\u1ea5t ph\u01b0\u01a1ng tr\u00ecnh c\u00f3 ch\u1ee9a c\u0103n th\u1ee9c. Trong qu\u00e1 tr\u00ecnh gi\u1ea3i, th\u00ed sinh c\u1ea7n c\u00f3 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i quan tr\u1ecdng nh\u01b0 \u0111\u1eb7t \u1ea9n ph\u1ee5, li\u00ean h\u1ee3p, d\u00f9ng b\u1ea5t \u0111\u1eb3ng th\u1ee9c. B\u00ean c\u1ea1nh \u0111\u00f3, \u0111\u1ec3 gi\u1ea3m nh\u1eb9 kh\u1ed1i l\u01b0\u1ee3ng t\u00ednh to\u00e1n, th\u00ed sinh n\u00ean t\u1eadn d\u1ee5ng vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y t\u00ednh c\u1ea7m tay \u0111\u1ec3 h\u1ed7 tr\u1ee3 cho m\u00ecnh trong qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch nh\u00e2n t\u1eed, c\u0169ng nh\u01b0 d\u1ef1 \u0111o\u00e1n nghi\u1ec7m.<\/p>\n

C\u00e2u 10:<\/strong> \u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi kh\u00f3 nh\u1ea5t d\u00f9ng \u0111\u1ec3 ph\u00e2n lo\u1ea1i th\u00ed sinh. D\u1ea1ng b\u00e0i th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong c\u00e2u n\u00e0y thu\u1ed9c ch\u1ee7 \u0111\u1ec1 b\u1ea5t \u0111\u1eb3ng th\u1ee9c ho\u1eb7c t\u00ecm gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t, gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c c\u00e2u n\u00e0y c\u1ea7n n\u1eafm v\u1eefng k\u1ef9 thu\u1eadt ch\u1ecdn \u0111i\u1ec3m r\u01a1i; c\u00e1c b\u1ea5t \u0111\u1eb3ng th\u1ee9c ph\u1ee5 c\u01a1 b\u1ea3n v\u00e0 \u00fd t\u01b0\u1edfng khai tri\u1ec3n b\u00e0i to\u00e1n.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong c\u00e1c \u0111\u1ec1 thi c\u1ee7a B\u1ed9 trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y l\u00e0 \u0111\u01b0a ra b\u00e0i to\u00e1n 3 bi\u1ebfn x, y, z v\u1ec1 b\u00e0i to\u00e1n 1 bi\u1ebfn n\u00e0o \u0111\u00f3 r\u1ed3i kh\u1ea3o s\u00e1t h\u00e0m m\u1ed9t bi\u1ebfn \u0111\u00f3 \u0111\u1ec3 \u0111i \u0111\u1ebfn k\u1ebft lu\u1eadn. Th\u01b0\u1eddng th\u00ec ta s\u1ebd d\u1ed3n v\u1ec1 bi\u1ebfn c\u00f3 vai tr\u00f2 kh\u00f4ng \u0111\u1ed1i x\u1ee9ng. Su\u1ed1t qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 b\u00e0i to\u00e1n, ta ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c d\u1ea5u \u201c=\u201d x\u1ea3y ra.<\/p>\n

C\u1ea5u tr\u00fac \u0111\u1ec1 thi n\u0103m nay d\u1ef1 \u0111o\u00e1n s\u1ebd kh\u00f4ng c\u00f3 nhi\u1ec1u thay \u0111\u1ed5i so v\u1edbi n\u0103m 2015 v\u1edbi 60% c\u00e2u h\u1ecfi \u1edf m\u1ee9c \u0111\u1ed9 c\u01a1 b\u1ea3n v\u00e0 40% m\u1ee9c \u0111\u1ed9 v\u1eadn d\u1ee5ng cao. Trong qu\u00e1 tr\u00ecnh l\u00e0m b\u00e0i, th\u00ed sinh c\u1ea7n c\u00f3 s\u1ef1 ph\u00e2n b\u1ed1 th\u1eddi gian th\u1eadt h\u1ee3p l\u00fd \u0111\u1ec3 c\u00f3 th\u1ec3 ho\u00e0n th\u00e0nh t\u1ed1t nh\u1ea5t b\u00e0i thi c\u1ee7a m\u00ecnh tr\u00e1nh t\u00ecnh tr\u1ea1ng m\u1ea5t qu\u00e1 nhi\u1ec1u th\u1eddi gian cho c\u00e2u h\u1ecfi kh\u00f3 trong khi ch\u01b0a ho\u00e0n th\u00e0nh xong nh\u1eefng c\u00e2u h\u1ecfi d\u1ec5.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m cao trong k\u1ef3 thi THPT Qu\u1ed1c gia s\u1eafp t\u1edbi, th\u00ed sinh c\u1ea7n n\u1eafm ch\u1eafc ki\u1ebfn th\u1ee9c v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp \u0111\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng c\u00e2u h\u1ecfi kh\u00f3 nh\u1ea5t c\u1ee7a \u0111\u1ec1 b\u00e0i. Theo c\u1ea5u tr\u00fac \u0111\u1ec1 thi, m\u1ee9c \u0111\u1ed9 t\u1eeb d\u1ec5 \u0111\u1ebfn kh\u00f3 s\u1ebd \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u0103ng […]<\/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":[157],"tags":[],"yoast_head":"\n