Đề kiểm tra 45 phút Đại số 10 - Học kì 2

<span class='text_page_counter'>(1)</span>Trường THPT Nguyễn Việt Khái Lớp: 10 Hoï vaø teân: ..................................................... Ñieåm. Thứ. ngaøy thaùng naêm BAØI KIỂM TRA MÔN TOÁN (ĐẠI SỐ) Thời gian: 45 phút. Lời phê của giáo viên. I-TRẮC NGHIỆM: (3 điểm) Hãy khoanh tròn vào đáp án thích hợp. Caâu 1: Ñieàu kieän cuûa baát phöông trình A. x > 1. B. x  3. x3 . 2x. 2. laø: x 1 C. x  1.  2x x  1   3 Caâu 2: Taäp nghieäm cuûa heä baát phöông trình   x  1  2x  2 ; +). B. [. 5. ; +). II- TỰ LUẬN: (7 điểm) Caâu 1: Giaûi caùc baát phöông trình sau: 2x  5 x  4 3x 1   a) 3 2 4. C. [. 2. laø:. 2 D. ( ; +) 4 4 5 5 Câu 3: Hãy điền các số và dấu “+” hoặc “–” vào các dấu “. . .” trong bảng sau: Cho f(x) = (x2 + 3x – 4)(x + 2) x – ... ... ... x2 + 3x – 4 ... 0 – ... 0 ... – + x+2 ... 0 ... f(x) – 0 + 0 – 0 + A. (. 5. D. Cả A, B, C đều sai.. ; +). +. 5x  5. 2 3x2  x  4 Câu 2: Tìm các giá trị của tham số m để phương trình x2 + (2m – 1)x + m2 – 2m – 1 = 0 vô nghiệm. Baøi laøm. b) 3x2 – 10x – 8  0. c). ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ Lop10.com.

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