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{"id":7486,"date":"2016-12-15T02:12:04","date_gmt":"2016-12-15T02:12:04","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=7486"},"modified":"2016-12-15T02:12:04","modified_gmt":"2016-12-15T02:12:04","slug":"de-tap-hk1-mon-toan-lop-12-trac-nghiem-co-dap-de-1","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/de-tap-hk1-mon-toan-lop-12-trac-nghiem-co-dap-de-1\/","title":{"rendered":"\u0110\u1ec1 \u00f4n t\u1eadp HK1 m\u00f4n To\u00e1n L\u1edbp 12 – tr\u1eafc nghi\u1ec7m c\u00f3 \u0111\u00e1p \u00e1n – \u0110\u1ec1 s\u1ed1 1"},"content":{"rendered":"

Ch\u1ecdn C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang v\u00e0 ghi k\u1ebft qu\u1ea3 tr\u1ea3 l\u1eddi v\u00e0o phi\u1ebfu l\u00e0m b\u00e0i.<\/strong><\/p>\n

C\u00e2u 1: <\/strong>Cho h\u00e0m s\u1ed1 $\"y=x^{3}+mx^{2}-(1+n^{2})x-5(n+m)\"$ \u00a0. Ch\u1ecdn kh\u1eb3ng \u0111\u1ecbnh \u0111\u00fang.<\/p>\n

A. <\/strong>H\u00e0m s\u1ed1\u00a0 kh\u00f4ng c\u00f3 c\u1ef1c \u0111\u1ea1i v\u00e0 c\u00f3 c\u1ef1c ti\u1ec3u v\u1edbi m\u1ecdi gi\u00e1 tr\u1ecb c\u1ee7a m v\u00e0 n<\/p>\n

B. <\/strong>H\u00e0m s\u1ed1 kh\u00f4ng c\u00f3 c\u1ef1c \u0111\u1ea1i v\u00e0 kh\u00f4ng c\u00f3 c\u1ef1c ti\u1ec3u v\u1edbi m\u1ecdi gi\u00e1 tr\u1ecb c\u1ee7a m v\u00e0 n<\/p>\n

C.<\/u><\/strong> H\u00e0m s\u1ed1 lu\u00f4n c\u00f3 c\u1ef1c \u0111\u1ea1i v\u00e0 c\u1ef1c ti\u1ec3u v\u1edbi m\u1ecdi gi\u00e1 tr\u1ecb c\u1ee7a m v\u00e0 n<\/p>\n

D. <\/strong>H\u00e0m s\u1ed1 ch\u1ec9 c\u00f3 c\u1ef1c \u0111\u1ea1i v\u00e0 kh\u00f4ng c\u00f3 c\u1ef1c ti\u1ec3u v\u1edbi m\u1ecdi gi\u00e1 tr\u1ecb c\u1ee7a m v\u00e0 n<\/p>\n

C\u00e2u 2: <\/strong>Ch\u1ecdn kh\u1eb3ng \u0111\u1ecbnh \u0111\u00fang. H\u00e0m s\u1ed1\u00a0 $\"y=x^{3}-3x^{2}+1\"$ <\/p>\n

A. <\/strong>Nh\u1eadn x =-2 l\u00e0m \u0111i\u1ec3m c\u1ef1c \u0111\u1ea1i\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. <\/strong>Nh\u1eadn x =2 l\u00e0m \u0111i\u1ec3m c\u1ef1c \u0111\u1ea1i<\/p>\n

C. <\/strong>Nh\u1eadn x =-2 l\u00e0m \u0111i\u1ec3m c\u1ef1c ti\u1ec3u\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D.<\/u><\/strong> Nh\u1eadn x =2 l\u00e0m \u0111i\u1ec3m c\u1ef1c ti\u1ec3u<\/p>\n

C\u00e2u 3: <\/strong>M\u1ed9t ch\u1ea5t \u0111i\u1ec3m chuy\u1ec3n \u0111\u1ed9ng theo quy lu\u1eadt $\"s=s(t)=6t^{2}-t^{3}-9t+1\"$ \u00a0.<\/p>\n

Th\u1eddi \u0111i\u1ec3m t (gi\u00e2y) t\u1ea1i \u0111\u00f3 v\u1eadn t\u1ed1c v (m\/s) c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ea1t\u00a0 gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t l\u00e0 :<\/p>\n

A.<\/u><\/strong> t=2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. <\/strong>t=3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. <\/strong>t=1 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. <\/strong>t=4<\/p>\n

$\"\"$ <\/p>\n

Theo Tuyensinh247<\/p>\n","protected":false},"excerpt":{"rendered":"

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