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A B C 10 D 12 Cõu 8: Cho hm s y x3 x x cú th l (C) Tip tuyn ca (C) ti im M thuc th (C) cú h s gúc ln nht thỡ M cú ta l: A Mt kt qu khỏc B 1;3 C 0; D 1;5 Truy cp trang http://tuyensinh247.com/ hc Toỏn Lý Húa Sinh Vn Anh S - a tt nht! 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B A C D Cõu 25: Cho hỡnh chúp SABC cú AC= a , SB SC BC a Hai mt (ABC) v (SAC) cựng vuụng gúc vi (SBC) Th tớch chúp SABC l: A a3 B a3 12 Cõu 26: Cho hm s y C x3 2m x a3 D a3 x Vi giỏ tr no ca m thỡ th hm s cú hai m2 im cc tr nm v hai phớa ca trc tung ? A B m 1 m Cõu 27: Cho a a v log b C m D m m 1 log b Khng nh no sau õy l ỳng: B a, b A b a C a, b D a b Cõu 28: Cho hỡnh chúp S.ABC cú ỏy ABC l tam giỏc vuụng cõn ti B, cú BC = a v mt bờn SAC vuụng gúc vi ỏy, cỏc mt bờn cũn li u to vi mt ỏy mt gúc 450 Th t ch chúp SABC l : a3 B 12 a3 A a3 C D a3 Cõu 29: Chn khng nh sai ? A Hm s y x cú xỏc nh D B Nu a b, x C Nu a b thỡ D Hm s y x2 thỡ a x 3x 1; bx logb a log a b cú xỏc nh D Cõu 30: Tỡm cỏc giỏ tr ca m phng trỡnh x3 A m B m \ (1;2) 3x C m Cõu 31: Cho tam giỏc ABC vuụng ti A, AB a, AC m2 m cú ba nghim phõn bit ? D m a Quay tam giỏc ABC quanh cnh AB ta c hỡnh nún nh B Mt mt phng (P) thay i luụn i qua nh B v ct ng trũn ỏy ti hai im M, N Din tớch tam giỏc BMN ln nht l Truy cp trang http://tuyensinh247.com/ hc Toỏn Lý Húa Sinh Vn Anh S - a tt nht! 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B log a2 b A log (ab) log a b a C log (ab) log a b 2logb a D log (ab) a a log a b Cõu 35: Cho hm s y x3 3mx m x Vi giỏ tr no ca m thỡ th hm s trờn t cc tiu ti x A m ? B m Cõu 36: th hm s y A M 2016;0 C m D m x 2016 ct trc tung ti im M cú ta x B M 2016;0 C M 0; 2016 D M 0; 2016 Cõu 37: S giao im ca th hm s y x3 x v ng thng d: y 5x l A B.1 C.2 D.3 Cõu 38: Bất ph-ơng trình: log4 x log2 x có tập nghiệm là: A 1;4 B 5; C (-1; 2) Cõu 39: Tớch hai nghim ca phng trỡnh 52 x A B -1 4 x2 2.5 x C -2 x D (-; 1) bng: D Cõu 40: Cho hm s f ( x) ln(4 x x ) Chn khng nh ỳng cỏc khng nh sau: A f B f C f 1, D f '(1) 1, Truy cp trang http://tuyensinh247.com/ hc Toỏn Lý Húa Sinh Vn Anh S - a tt nht! 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A m B m 0;1 1; C m D m 1; 1;1 Cõu 42: Nu log12 a;log12 b thỡ: A log a a B log a b C log a b D log b a Cõu 43: Cho hỡnh chúp SABCD cú ỏy ABCD l hỡnh vuụng cú cnh a v SA (ABCD) v mt bờn (SCD) hp vi ỏy mt gúc 60o Th tớch chúp SABCD l: A 2a 3 B a 3 C a3 3 D a3 Cõu 44 Mt hỡnh lp phng cú cnh bng Mt hỡnh tr cú ng trũn ỏy ni tip mt i din ca hỡnh lp phng Hiu s th tớch lp phng v tr l: A B C D Cõu 45 Cho hỡnh tr cú bỏn k nh ỏy cm, ng cao 4cm, din tớch xung quanh ca hỡnh tr ny l: A 20 (cm ) B 24 (cm ) C 26 (cm ) D 22 (cm ) Cõu 46 Mt tr cú th tớch l 20 (vtt) Nu tng bỏn k nh lờn ln thỡ th tớch ca tr mi l: A 80 (vtt) B 40 (vtt) C 60 (vtt) D 400 (vtt) Cõu 47 Tip tuyn ca th hm s y x3 3x ti cỏc giao im vi trc honh cú phng trỡnh l A y v y x 18 B y v y x 18 C y v y x 18 D y v y x 18 Cõu 48: o hm ca hm s y A e x sin x cosx B cosx e x sin x l sin x e x Cõu 49: Giỏ tr ln nht ca hm s y A 2 B 2 C e x sin x f x x C D e x sin x cosx cosx x l ? D 2 Cõu 50: Cho chúp t giỏc u S.ABCD cú cnh ỏy bng a, SB=2a Bỏn kớnh ca hỡnh cu ngoi tip hỡnh chúp l A 14.a B a 14 C 2a 12 D a 14 Truy cp trang http://tuyensinh247.com/ hc Toỏn Lý Húa Sinh Vn Anh S - a tt nht! 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