题目
题型:填空题难度:一般来源:不详
3x+8 |
2x+1 |
答案
3x+8 |
2x+1 |
| ||||
2x+1 |
3 |
2 |
| ||
2x+1 |
因为
| ||
2x+1 |
3 |
2 |
| ||
2x+1 |
3 |
2 |
即函数的值域为{y|y≠
3 |
2 |
故答案为:{y|y≠
3 |
2 |
核心考点
举一反三
|
1 |
2 |
1 |
2 |
1 |
f(x) |
A.[2,4] | B.[3,7] | C.[1,3] | D.[2,6] |
3x+8 |
2x+1 |
3x+8 |
2x+1 |
| ||||
2x+1 |
3 |
2 |
| ||
2x+1 |
| ||
2x+1 |
3 |
2 |
| ||
2x+1 |
3 |
2 |
3 |
2 |
3 |
2 |
|
1 |
2 |
1 |
2 |
1 |
f(x) |
A.[2,4] | B.[3,7] | C.[1,3] | D.[2,6] |