Bài tập trắc nghiệm chương I: Khảo sát hàm số31548

1 Câu H y  x3  3x2  A (0; 2) B (;0)  (2; ) C (;1)  (2; ) D (0;1) y Câu T x2  3x  x2 A D  C D  Câu H \ 1;1 B D  \ 0 D D   3 \ 0;   2 x2  x y x 1 A  ;1  1;   B  0;   C  1;   D 1;   Câu y  x2  2mx  3m A m  0, m  B  m  C m  3; m  D 3  m  Câu y  x4  x2  2016 A B C D.4 Câu y   x2  x0 f ( x)  Câu x0 x4  x2  A x  2 B x  C x  D x  f ( x)  Câu x4  x2  A fCÐ  B fCÐ  C fCÐ  20 D fCÐ  6 GV Nguy n Ng c Th ch L ng THPT Nh n Tr ch ThuVienDeThi.com y Câu x2  mx  x m x2 A m  B m  3 C m  1 C m  2  y  x3  mx2   m   x  3  Câu 10 x 1 A m  B m  C m  D m  1;4 y  f ( x)  x3  3x2  Câu 11 A y  B y  C y  D y  21 y  x3  3x4 Câu 12 A y  B y  C y  D y  y  x Câu 13 (x  0) x A y  B y  C y  D y  Câu 14 cm A S  36 cm2 B S  24 cm2 C S  49 cm2 D S  40 cm2 y Câu 15 2x  1 x A x  2; y  1 B x  1; y  C x  3; y  1 D x  2; y  x  3 Câu 16 A y  3x  x5 3x2  x C y  x2  GV Nguy n Ng c Th ch L B y  2x 1 3 x D y  3x  x ng THPT Nh n Tr ch ThuVienDeThi.com y Câu 17 x 1 x A lim y   B lim y   x2 x2 x2 D TCN y  y Câu 18 2 x  x5 A I (5; 2) B I (2; 5) C I (2;1) D I (1; 2) y  x3  3x2  mx  m Câu 19 A m  B m  C m  D m  Câu 20 y  x4  x2  y Câu 21 3x  x3 B m  ; M  5 A m  1, M  C m  5; M  Câu 22  3; 2  0; 2 D m  1; m  2 y  x4  x2  A M  11; m  B M  66; m  3 C M  66; m  D M  3; m  Câu 23 A M  7; m  y 3x2  10 x  20 x2  x  B M  3; m  C M  17; m  Câu 24 y GTNN D M  7; m  x 1 (C) x 1 x 1 GV Nguy n Ng c Th ch L M (3;1) ng THPT Nh n Tr ch ThuVienDeThi.com x  2 I (1;1) y Câu 25 x 1 x 1 A M (5; 2) B M (0;1) C M  4;   D M  3;   y   x3  x  Câu 26 A B C D y  x4  100 Câu 27 A B C D y  x3  x2  3x  Câu 28 x 1 C -1 y  x4  3x2  Câu 29 A x  1 B x  C x  D x  1, x  Câu 30  x4 y 1 A  ;0  B 1;   C (3; 4) D  ;1 y Câu 31 x 2 A B C -5 D 10 Câu 32 y x x3  ;    ;   GV Nguy n Ng c Th ch L ng THPT Nh n Tr ch ThuVienDeThi.com y Câu 33 x2  x  x y  x 1 A (2; 2) B (2; 3) C (1;0) D (3;1) y  ( x  3)( x2  x  4) Câu 34 A B C.0 D.1 y Câu 35 x2  (m  1) x  2 x A m  1 B m  C m  1;1 D m  Câu 36 f ( x)  5 x3 x2   6x   2;3  2;3  ; 2 Câu 37  2;   f ( x)  x5  15x4  10 x3  22  ;0   0;1 Câu 38 y  sin x  x  ;0  D NB  ;0  ên Câu 39 Câu 40  0;   f ( x)  x3  3x2  x  11 x  1 x3 x 1 x3 y  x4  x3  x3 x0 x3 x0 y  x4  x2  Câu 41 A GV Nguy n Ng c Th ch L B ng THPT Nh n Tr ch ThuVienDeThi.com C D y Câu 42 x2  3x  x 1 A B C D f '( x)  x2 ( x  1)2 (2 x  1) Câu 43 A B C D Câu 44 y  x  sin x  x x  x   y  3  x A -3 B C -1 D y  3sin x  4cos x Câu 46 A B -5 C -4 D -3 f ( x)  x3  3x2  12 x  Câu 47 A B 10 C 15 D 11  1; 2 f ( x)   x2  x  Câu 48 A B C D y  x y4 y0 y x 1 y 1 Câu 50 x Câu 45 Câu 49  D y  2 x 2x 1 GV Nguy n Ng c Th ch L ng THPT Nh n Tr ch ThuVienDeThi.com  1 I  ;   2   I   ;2   1 1 I ;  2 2 D y  x2  x  y  x3  x2  x  Câu 51 A B C D y  3 Câu 52 x y  x2 A x  1 B x  C x  D x  y Câu 53 2 x2  3x  2x 1 x  1 y  2x 1 y  x 1 y  x x2  x  y 5 x2  x  Câu 54 y  x 1 x2 y y f '( x)  x2 ( x  1)2 ( x  2)4 Câu 55 A B C D Câu 56 y 9( x2  1)( x  1) 3x2  x  A x3 B x  2 C y0 D y  3x  10 Câu 57 y  x3  3x A y3 B C y D y  4 y  x3  Câu 58 y  3x  m GV Nguy n Ng c Th ch L ng THPT Nh n Tr ch ThuVienDeThi.com A -1 B C -2 D 1;3 y   x2 Câu 59 D -3 A 25 B C 25 D  2;3 y  x2 Câu 60 A B C D - Câu 62 y  x3  mx2   m2  m  1 x  x 1 A m  B m  C m  1 D m  2 Câu 63 y  x4  2(m  1) x2  m A m  B m  1 C m  D m  1 y Câu 64 sin x  sin x  sin x  A y  B y  C y  1 D y  Câu 65 y   x3  3x2  A(3;1) A y  9 x  20 B x  y  28  C y  x  20 D x  y  28  x4  x2   m Câu 66 A m  1 B m  C m  D m  Câu 67  A m  ;1  (1; ) GV Nguy n Ng c Th ch L y d : y  x  m 2x 1 x 1 B m  3;3  ng  THPT Nh n Tr ch ThuVienDeThi.com  C m  2;  y Câu 68   D m ;3    3;  2x  x A  0;  , 1; 1 B  1;  ;(3;3) C (3;3),(1;1) D  4;  ;  3;3     3  (d ) : y  mx  2m  Câu 69 y  x3  x2  x  A m  3 B m  C m  3 D m  y Câu 70 x3 x 1 d : y  2x  m cho A m  B m  C m  D m  1 y  x3  x2  3x  y  3x  Câu 71 B y  3x  A y  3x  29 C y  3x  20 y  x3  3x  Câu 72  A(1; 2) A y  x  7; y  2 B y  x; y  2 x  C y  x  1; y  3x  D y  3x  1; y  x  2 x3  3x2 12 x 13  m Câu 73 A m  20; m  B m  13; m  C m  0; m  13 D m  20; m  GV Nguy n Ng c Th ch L ng THPT Nh n Tr ch ThuVienDeThi.com 10 y  x3  mx2  x  m  Câu 74 x2 A  xB2  A m  1 B m  C m  3 D m  y  x3  mx2   m2  m  1 x  cho  xA  xB   xA  xB   Câu 75 A m  1 C m   B m  3 D m  x3  3x2   m  Câu 76 A 2  m  B 3  m  C  m  D  m  GV Nguy n Ng c Th ch L ng THPT Nh n Tr ch ThuVienDeThi.com