题目内容
给出函数f(x),g(x)如下表,则f〔g(x)〕的值域为( )
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试题答案
A
| x | 1 | 2 | 3 | 4 |
| f(x) | 4 | 3 | 2 | 1 |
| x | 1 | 2 | 3 | 4 |
| g(x) | 1 | 1 | 3 | 3 |
| A.{4,2} | B.{1,3} |
| C.{1,2,3,4} | D.以上情况都有可能 |
| x | 1 | 2 | 3 | 4 |
| g(x) | 1 | 1 | 3 | 3 |
| x | 1 | 2 | 3 | 4 |
| f(x) | 4 | 3 | 2 | 1 |
| A.{4,2} | B.{1,3} |
| C.{1,2,3,4} | D.以上情况都有可能 |
| x | 1 | 2 | 3 | 4 |
| f(x) | 4 | 3 | 2 | 1 |
| x | 1 | 2 | 3 | 4 |
| g(x) | 1 | 1 | 3 | 3 |
| x | 1 | 2 | 3 | 4 |
| f(x) | 4 | 3 | 2 | 1 |
| x | 1 | 2 | 3 | 4 |
| g(x) | 1 | 1 | 3 | 3 |
| x | 1 | 2 | 3 | 4 |
| g(x) | 1 | 1 | 3 | 3 |
| x | 1 | 2 | 3 | 4 |
| f(x) | 4 | 3 | 2 | 1 |
| π |
| 3 |
| 1 |
| x |