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...................................................................................................................................................................................... ...................................................................................................................................................................................... ...................................................................................................................................................................................... ...................................................................................................................................................................................... 2 Trường THPT Nguyễn Việt Khái Họ và tên:…………………………... Lớp:………. Điểm Thứ Ngày Tháng Năm 2010 BÀI KIỂM TRA 45 PHÚT Môn:Toán Nhận xét của giáo viên I-Trắc nghiệm: (3 điểm) 1/ Tập nghiệm của Bất phương trình ( x + 2 ) ( − x + 4 ) ≤ 0 là: A. T = [ −2;4 ] B. T = ( −2;4 ) D. T = ( −∞; −2 ] ∪ [ 4; +∞ ) C. T = ( −∞; −2 ) ∪ ( 4; +∞ ) 2/ Cho f ( x ) = −3 x + 2 . Hãy chọn ra số dương trong các số sau: 1 3 2  3 A. f  ÷ 4 3 C. f ( 1) B. f  ÷ D. f  ÷ 3/ Cho Bất phương trình 2x + 4y < 5 có tập nghiệm là S.Tìm câu đúng: A. ( 1;1) ∈ S B. ( 1;10 ) ∈ S C. ( 1;2 ) ∈ S D. ( −1;0 ) ∈ S 4/ Cho Bất phương trình −3 x + 2 ≥ 0 , tập nghiệm của Bất phương trình là: 2 3   A.  ; +∞ ÷ 2 2   C.  −∞;  3 3   2x + 1 f ( x) = , tập xác định của Biểu thức f ( x ) là: −3 x + 1 1 1   B. D =  −∞; ÷ C. D =  −∞;  3 3   B.  ; +∞ ÷ 5/ Cho Biểu thức:   2 3 D.  −∞; − ÷ 1  1  D. D =  ; +∞ ÷ 3  3  6/ T= ( 1; +∞ ) là tập nghiệm của Bất phương trình nào trong các Bất phương trình sau: A. B. −8 x + 6 > 0 C. 4 x − 3 > 0 D. 3 x − 3 > 0 2x − 3 < 0 A. D =  ; +∞ ÷ II.TỰ LUẬN Bài 1: (2 điểm) Lập bảng xét dấu biểu thức sau: f ( x) = x+7 (2 x − 1)( x + 2) Bài 2: ( 3 điểm) Giải các bất phương trình sau: a) (3 x − 1)( x + 3) > 0 b) 5 >2 7−x c) 3− 2x + 1 4 > x+ 5 3 Bài 3: (2 điểm) Biểu diễn hình học tập nghiệm của bất phương trình sau: x − 5 y < 2 Câu Đáp án 1 2 3 4 5 6 II-Tự luận: 3 ...................................................................................................................................................................................... ...................................................................................................................................................................................... ...................................................................................................................................................................................... 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Trường THPT Nguyễn Việt Khái Thứ Ngày Tháng Năm 2010 4 Họ và tên:…………………………... Lớp:………. Điểm BÀI KIỂM TRA 45 PHÚT Môn:Toán Nhận xét của giáo viên I-Trắc nghiệm: (3 điểm) 1/ Tập nghiệm của Bất phương trình ( x + 2 ) ( − x + 4 ) 〈 0 là: A. T = [ −2;4 ] B. T = ( −2;4 ) D. T = ( −∞; −2 ] ∪ [ 4; +∞ ) C. T = ( −∞; −2 ) ∪ ( 4; +∞ ) 2/ Cho f ( x ) = −3 x + 2 . Hãy chọn ra số dương trong các số sau: 8  3 2 6 A. f  ÷ C. f ( 1) B. f  ÷ 4 3 D. f  ÷ 3/ Cho Bất phương trình 2x + 4y < 5 có tập nghiệm là S.Tìm câu đúng: A. ( 1;1) ∈ S B. ( 1;10 ) ∈ S C. ( 1; −1) ∈ S D. ( 1;5 ) ∈ S 4/ Cho Bất phương trình −3 x + 2〉 0 , tập nghiệm của Bất phương trình là: 2 3   A.  ; +∞ ÷ 2 2   C.  −∞;  3 3   2x + 1 f ( x) = , tập xác định của Biểu thức f ( x ) là: −3 x + 1 1 1   B. D =  −∞; ÷ C. D =  −∞;  3 3   B.  ; +∞ ÷ 5/ Cho Biểu thức:   2 3 D.  −∞; − ÷ 1  1  D. D =  ; +∞ ÷ 3  3  6/ T= ( 2; +∞ ) là tập nghiệm của Bất phương trình nào trong các Bất phương trình sau: A. B. −8 x + 6 > 0 C. 4 x − 8 > 0 D. 3 x − 3 > 0 2x − 3 < 0 A. D =  ; +∞ ÷ II.TỰ LUẬN Bài 1: (2 điểm) Lập bảng xét dấu biểu thức sau: f ( x) = x +1 ( x − 2)( x + 2) Bài 2: ( 3 điểm) Giải các bất phương trình sau: a) (4 − x)( x + 5) > 0 b) 5 >4 x −3 c) x − 1 5(3 x − 1) < 2 2 Bài 3: (2 điểm) Biểu diễn hình học tập nghiệm của bất phương trình sau: − 3 x + y < −2 Câu Đáp án 1 2 3 4 5 6 II-Tự luận: 5 ...................................................................................................................................................................................... ...................................................................................................................................................................................... ...................................................................................................................................................................................... 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