x |
2π |
A.1个 | B.2个 | C.3个 | D.4个 |
x |
2π |
π |
2 |
x |
2π |
1 |
4 |
5π |
2 |
x |
2π |
5 |
4 |
A.(-2,-1) | B.(-1,0) | C.(0,1) | D.(1,2) |
A.(0,1) | B.(1,2) | C.(2,3) | D.(3,4) |
A. | B. | C. | D. |
A.[-5,-2]∪[2,5] | B.[-2,0]∪[2,5] | C.[-2,2] | D.[-5,-2]∪[0,2] |
A.(0,1) | B.(1,2) | C.(2,3) | D.(3,4) |
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