1 |
1-x2 |
1 |
3 |
A.-2 | B.-3 | C.1 | D.3 |
1 |
1-x2 |
1 |
3 |
1 |
3 |
1 |
100 |
A.2 | B.-2 | C.1 | D.-1 |
A.y=log2
| B.y=log2(3-x)(x>3) | ||
C.y=log2(x-3)(x>4) | D.y=log2
|
1 |
3 |
A.(
| B.(1,
| C.(
| D.(0,1) |
A.[-1,1] | B.(0,+∞) | ||||||||||||||||||
C.[-
| D.[
|
1 |
2x-1 |
A.(-∞,+∞) | B.(0,+∞) | C.(-∞,0) | D.(-∞,0)∪(0,+∞) |
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