1/4单选题
难度：
1.已知函数f(x)的图象如图所示，则此函数的值域是（）
| A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- 5Y+v5Lul55yL5Ye65p2l77yM5pyA5aSn5YC85pivMu+8jOacgOWwj+WAvOaYry0yLA==
正确答案：RA==
6Kej5p6Q77ya6KeC5a+f5Zu+5YOP5Y+R546w77yM5Ye95pWw55qE5pyA5aSn5YC85pivMu+8jOacgOWwj+WAvOaYry0y77yM5omA5Lul77yM6YCJRA==
2/4单选题
难度：
2.二次函数
（ ）
（ ） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IOmFjeaWueWPr+W+l++8mjxpbWcgd2lkdGg9MTA0IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzJFLzY1L3JCQUNKbFNneFNTaXNGekpBQUFDVkxXd1BTRTgwMi5wbmciPuWboOS4ujxpbWcgd2lkdGg9NzYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvQTMvckJBQ0oxU2d4U1RpTjhPVkFBQUJfemVtZnJBMjMyLnBuZyI+77yM5omA5Lul77yaPGltZyB3aWR0aD0xMDEgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvNjUvckJBQ0psU2d4U1NBZzQ1RkFBQUNNU0pGYkJZNjg2LnBuZyI+
正确答案：RA==
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
3/4单选题
难度：
3.二次函数
()
() | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- 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
- 提示2：
- 5Zug5Li6PGltZyB3aWR0aD01MyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC82Mi82Mi9yQkFDRTFTZ3hTbnpNN1NuQUFBQnhCcGVPSVEyOTkucG5nIj7vvIzlvZM8aW1nIHdpZHRoPTM0IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzYyLzYyL3JCQUNFMVNneFNueWs0cFJBQUFCV0N1VkZFMDM3MC5wbmciPuaXtu+8jOWHveaVsOWAvOaYrznvvIzop4Llr5/lm77lg4/lj6/nn6XvvJo8aW1nIHdpZHRoPTggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOEUvRjEvckJBQ0ZGU2d4U215ZGNsNUFBQUJFaFNydXY4MTM0LnBuZyI+5Zyo5Yy66Ze0PGltZyB3aWR0aD0yOCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yRS82NS9yQkFDSmxTZ3hTblNIOEVBQUFBQlhsRmdfaTA0OTYucG5nIj7kuIrnmoTmnIDlsI/lgLzmmK8177yM5pyA5aSn5YC85pivOe+8gQ==
正确答案：Qg==
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
4/4单选题
难度：
4.已知
,则函数的值域是（）
,则函数的值域是（） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IOi/meaYr+S4gOS4quWIhuW8j+Wei+WHveaVsO+8jOeUqOWIhuemu+W4uOaVsOazle+8jDxpbWcgd2lkdGg9MjM4IGhlaWdodD02MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzYyLzYyL3JCQUNFMVNneFMtQjBJOURBQUFFa0lGOW5pYzIyMC5wbmciPg==
- 提示2：
- IOaJgOS7pTxpbWcgd2lkdGg9NjkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvOEUvRjEvckJBQ0ZGU2d4Uy15aFZ3WUFBQUNSQnFMdWV3NDQ4LnBuZyI+
正确答案：RA==
6Kej5p6Q77ya55So5YiG56a75bi45pWw5rOV5rGC5YC85Z+f77yMPGltZyB3aWR0aD0yMzQgaGVpZ2h0PTYyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvNjUvckJBQ0psU2d4U19RNGdtMEFBQUVpaUNydWU0NzIzLnBuZyI+77yM5omA5LulPGltZyB3aWR0aD02OSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC84RS9GMS9yQkFDRkZTZ3hTLXloVndZQUFBQ1JCcUx1ZXc0NDgucG5nIj7vvIznlKjljLrpl7TooajnpLrkuLo8aW1nIHdpZHRoPTc1IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzYyLzYyL3JCQUNFMVNneFMtUVlHZDBBQUFDcDNCM2NzRTE5My5wbmciPi4=