TRẮC NGHIỆM GIỚI HẠN HÀM SỐ lim x x A.5 B.7 C.9 D A.-2 B.5 C.9 D 11 x 3x lim x 1 x 1 A.-1 B.1 C D 3x x lim x 1 x2 A.5 B.1 C D D x 1 lim x x x 2 3x x5 x 1 x x A B C lim 3x x5 x 1 x x A B C D x x3 lim x 2 x x A B 12 C D x x5 x 1 x x A 12 B C lim x x3 x 2 x x A 10 B 10 C 10 lim 4x x A.5 lim lim x 1 11 lim x 1 B 7 D D C.1 D -5 1 2 D A.0 B C x x3 x x x x4 A.-2 B -1 C.1 D 13 lim 3x x5 x x x A B C D 3x x5 14 lim x x x A B C D 3x x 15 lim x x x A.0 B C D x 1 x2 12 lim ThuVienDeThi.com 16 lim 3x x5 x5 x A.0 B C D 17 lim x4 x2 x2 x A B C 15 D 18 lim x x 3x x 16 x A B C x x 2 x 1 19 lim x 3 x3 3x x3 20 lim x 1 3x x 21 lim x 1 x2 x 1 x 2 24 lim x 0 x3 x x2 x 2x x 5x x 25 lim x2 x x 1 B A.1 B A x2 22 lim x 1 x 23 lim A x x 2 B D C D C D C D A.2 B A B C D A B 1 C D A.0 B 1 C D C.-1 D -13 C.-2 D x x x 26 f x , lim f x x x2 5 x A.11 B 2 x3 x x 27 f x , lim f x x x1 x x A.-4 35 D C 3 B -3 2 x x x 28 f x , lim f x x 1 x ThuVienDeThi.com A B - C.0 D C.-2 D.+ C.4 D.+ x2 x 29 f x x , lim f x x 1 2x x A.-1 B 2x x 30 f x x , lim f x x 1 3x x A.- B 2 x 3x x 1 x2 31 lim A B C - D.- x2 32 lim x 2 x x A B C - D.- x 3x 33 lim x 2 2x A B C + D.- 34 lim x 12 x 35 x 5 x5 A B -2 C + D.5 x 12 x 35 35 lim x 5 x 25 A B - C + D A B x x 3x 36 lim x 37 lim x x2 x x 1 x x x 39 lim x x x 38 lim x A A A x x t4 1 t 1 t 40 lim A C - C + B D.- D - D + B C D + B C.- D + B C ThuVienDeThi.com t a4 t a t a 41 lim A 4a B 4a y4 1 42 lim y 1 y A B 3x x5 43 lim x x x A.3 B x2 x A.0 2x B C + D B -1 C + D B C - D B -4 C + D B - C + D B -4 C + D 44 lim x x x2 x 45 lim A.0 x 0 x x 1 x32 46 lim x 1 A C 3a 3 C D + D + C + D - x x 15 47 lim x 5 x 10 A.-8 48 lim 3x x5 x x x A x x 15 49 lim x 5 x 10 A.-1 x x 20 50 lim x 5 x 10 A B -2 C + D x3 x 1 x x A 3 B -1 C.0 D A.0 B C + D C.0 D 51 lim 52 lim x x x x3 x 3x 53 lim x 1 x3 A x3 x x x x B 3 A.2 B C + D - x x A.4 B C + D - 54 lim 55 lim ThuVienDeThi.com 3x x x 3 2x A 2 x3 x 1 x2 A 56 lim 57 lim 58 lim x 0 x 3x x A.1 B B C 6 D - C + D -1 C B ThuVienDeThi.com D + ThuVienDeThi.com