1 |
2 |
2x+b |
2x-b |
2x+b |
2x-b |
b |
2 |
b |
2 |
b |
2 |
b |
2 |
1 |
2 |
-2x+b |
-2x-b |
1 |
2 |
2x-b |
2x+b |
1 |
2 |
2x+b |
2x-b |
2x+b |
2x-b |
4b(x2-x1) |
(2x1-b)(2x2-b) |
b |
2 |
b |
2 |
4b(x2-x1) |
(2x1-b)(2x2-b) |
1 |
2 |
1 |
2 |
2 |
3 |
|
|
A.(2,+∞) | B.(1,+∞) | C.[1,+∞) | D.[2,+∞) |
e |
A.a>b>c | B.a>c>b | C.c>a>b | D.c>b>a |
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