1、江苏省洪泽中等专业学校数学单元试卷（不等式）时间：90 分钟满分：100 分一选择题（每题 3 分，共 24 分）1. 若 a0，ab0B. b0C. b-6 的解集为（）A. x x 3B. x x -3C. x x -3D. x x 0 的解集为（）A. x x 3B. x x -1C. x - 1 x 3或x b ，且 b0B. a+b0C.a 06. 下列不等式中成立的是（）A. x20B. x2+x+10C. x2-1a7. 下列不等式与 x-2B. mxmC. x2(x-1)0D. (x+1)2(1-x)08. 不等式 3x - 1 1 的解集为（）A. RB. x x 2 C.
2、x x 2 D. x 0 x 2 3二填空题（每空 2 分，共 32 分）339. 若 a2a，则 a0.10. 若 ab,c+10,则 acbc ；ac2bc2.11. 比较大小： 77 ； 58 ；a20.91181112. 集合 x x 0 的解集是；（用区间表示）不等式 2x 3 解集是.（用区间表示）14. 如果 x-35，那么 x6，那么 x.15. 不等式 x2+6x+90 的解集为.三解答题16.（32 分）解不等式：(1) 4x+15(2) 3x+25(3)(5) 1 - x 01 x + 1 22x + 1 -5x + 1 - 2 0(7) 3x2-2x-10(8) -x2
3、2x+3017.（12 分）比较大小：（1）(x+1)(x+5)与(x+3)2(2) (x2+1)2 与 x4+x2+1参考答案：1-8：CDDC ABAD 9.,10.11., 12. (-,3) ,x | -3 113. (-1,+) , (- 3 , 3)2 214.8,-315.x | x -316.(1);(2);(3);(4);(5);(6);(7);(8).17.(1), “”“”At the end, Xiao Bian gives you a passage. Minand once said, people who learn to learn are very happ
4、y people. In every wonderful life, learning is an eternal theme. As a professional clerical and teaching position, I understand the importance of continuous learning, life is diligent, nothing can be gained, only continuous learning can achieve better self. Only by constantly learning and mastering
5、the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. This document is also edited by my studio professionals, there may be errors in the document, if there are errors, please correct, thank you!
