题目
题型:单选题难度:一般来源:不详
x |
x-4 |
-x2+10x-16 |
A.[2,4] | B.[0,2] | C.[2,4) | D.[0,8] |
答案
x |
x-4 |
B={x|y=
-x2+10x-16 |
A∩B={x|2≤x<4}.
故选C.
核心考点
举一反三
1 |
x |
A.[
| B.(0,
| C.(0,+∞) | D.(-∞,0]∪[
|
x-1 |
x-2 |
A.(1,2) | B.(1,2] | C.[1,2) | D.[1,2] |
A.9 | B.11 | C.12 | D.14 |
x |
x-4 |
-x2+10x-16 |
A.[2,4] | B.[0,2] | C.[2,4) | D.[0,8] |
x |
x-4 |
-x2+10x-16 |
1 |
x |
A.[
| B.(0,
| C.(0,+∞) | D.(-∞,0]∪[
|
x-1 |
x-2 |
A.(1,2) | B.(1,2] | C.[1,2) | D.[1,2] |
A.9 | B.11 | C.12 | D.14 |