Bài tập trắc nghiệm môn Đại số Lớp 10 - Chương 3 - Bài: Phương trình chứa dấu giá trị tuyệt đối. Phương trình chứa ẩn ở mẫu số (Kèm đáp án)

Nội dung text: Bài tập trắc nghiệm môn Đại số Lớp 10 - Chương 3 - Bài: Phương trình chứa dấu giá trị tuyệt đối. Phương trình chứa ẩn ở mẫu số (Kèm đáp án)

1. 0D3 – PHƯƠNG TRÌNH CHỨA DẤU GIÁ TRỊ TUYỆT ĐỐI PHƯƠNG TRÌNH CHỨA ẨN Ở MẪU SỐ 1. 2x 1 x2 3x 4 . 2. x3 1 x2 3x 2 . 3. x 1 x2 3x 2 . 4. x2 1 x2 4x 3 5. 2x2 1 4x 1 6. 3x 1 2x2 3x 1 Trang 1
2. 7. 2x2 1 x2 x 1 8. 2x2 3x 2x 1 9. 3x 2 3 2x . 10.| 3x 2 | x2 2x 3 . 11.| x2 3x 2 | x 1 12. | 3x 2 | x2 2x 3 Trang 2
3. 13. 2x 5 x2 5x 1. 14. 2x 1 x2 x 1 15. x 1 2x 1 3x . 16. x 3 7 x 10 . Trang 3
4. 17. x2 x 2x 1 1. 18. x 1 x 2 x 3 14 . 19. 2x 1 2 3 2x 1 4 0 . x4 6x2 4 x2 2 20. 2 . x x Trang 4
5. 13 1 6 4 1 1 4 21. 22. 2x2 x 21 2x 7 x2 9 2x3 3x2 8x 12 2x 3 x2 4 2x2 7x 6 Trang 5
6. x 1 x 2 x 3 x 4 2x 13x 23. 4 24. 6 x 1 x 2 x 3 x 4 3x2 5x 2 3x2 x 2 x4 3x2 1 1 1 25. 3 26. 15 x3 x2 x x2 (x 1)2 Trang 6
7. 2 2 2(x 1) 13(x 1) x 1 x 1 x 2 28. 6 . 27. 12 2 2 x 2 x 3 x 3 3x x 3x 7x 6 Trang 7
8. 2 Bài 1: Cho phương trình x 2x 2 x 1 m 3 0. a) Giải phương trình khi m 2 . b) Tìm m để phương trình sau có nghiệm. ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ Bài 2: Giải và biện luận các phương trình sau Trang 8
9. a) mx 2m x 1 . b) mx 2x mx 1 . ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ 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................................................................................................................................................................ ................................................................................................................................................................ ................................................................................................................................................................ 2 ax 1 2 a x 1 Bài 3: Giải và biện luận phương trình sau 2 . x 1 x 1 x 1 ................................................................................................................................................................ ................................................................................................................................................................ 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