1. 难度:中等 | |
(2001•山东)已知,实数a、b在数轴上对应点的位置如图所示,化简![]() ![]() |
2. 难度:中等 | |
(2001•湖州)已知a<2,化简![]() |
3. 难度:中等 | |
(2001•贵阳)若![]() |
4. 难度:中等 | |
(2001•上海)计算:![]() |
5. 难度:中等 | |
(2002•湛江)分母有理化![]() |
6. 难度:中等 | |
(2001•乌鲁木齐)计算![]() |
7. 难度:中等 | |
(2001•陕西)化简![]() |
8. 难度:中等 | |
(2001•常州)(-2)= ;(![]() ![]() |
9. 难度:中等 | |
(2001•天津)化简:![]() |
10. 难度:中等 | |
(2001•贵阳)计算:![]() |
11. 难度:中等 | |
(2001•内江)计算:![]() |
12. 难度:中等 | |
(2001•呼和浩特)计算:![]() |
13. 难度:中等 | |
(2013•贺州)函数![]() |
14. 难度:中等 | |
(2010•锦州)函数![]() |
15. 难度:中等 | |
(2006•巴中)函数![]() |
16. 难度:中等 | |
(2002•东城区)函数![]() |
17. 难度:中等 | |
(2001•沈阳)函数![]() |
18. 难度:中等 | |
(2001•山东)在函数![]() |
19. 难度:中等 | |
(2001•黑龙江)函数![]() |
20. 难度:中等 | |
(2001•海淀区)在函数y=![]() |
21. 难度:中等 | |
(2001•贵阳)函数y=x+![]() |
22. 难度:中等 | |
(2001•常州)写出下列函数中自变量x的取值范围:(1)y=![]() ![]() |
23. 难度:中等 | |
(2005•襄阳)先化简,再求值![]() ![]() |
24. 难度:中等 | |
(2001•贵阳)先化简,再求值:已知![]() ![]() |
25. 难度:中等 | |
(2001•青海)计算:![]() |
26. 难度:中等 | |
(2001•北京)计算:![]() |
27. 难度:中等 | |
(2001•湖州)计算:![]() |