π |
3 |
π |
6 |
6m-1 |
6m+5 |
π |
3 |
π |
6 |
1 |
2 |
1 |
2 |
6m-1 |
6m+5 |
6m-1 |
6m+5 |
1 |
2 |
6m-1 |
6m+5 |
6m-7 |
2(6m+5) |
-6 |
6m+5 |
7 |
6 |
7 |
6 |
1-2x |
x+1 |
2x-1 |
3x+1 |
x2-3x+2 |
x-1 |
A.{x∈R|x≠1} | B.{x∈R|x≤2} |
C.{x∈R|x≤2,且x≠1} | D.{x∈R|x≥2} |
(a+1)x2-2 |
ax+1 |
2 |
x+1 |
A.(-1,1] | B.[-1,1) | C.(-1,1) | D.[-1,1] |
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