1+x |
1-x |
(e-ax-ae-ax)(1-x)+(1+x)e-ax |
(1-x)2 |
ax2+2-a |
(1-x)2 |
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1 |
2 |
|
1+x |
1-x |
1+x |
1-x |
1 |
2 |
2-x |
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x-2 |
A.(-3,2)∪(2,3) | B.[-3,2)∪(2,3] | C.[-3,3] | D.(-3,3) |
A.1 | B.2 | C.3 | D.4 |
1-x2 |
A.[0,1] | B.(-1,1) | C.[-1,1] | D.(-∞,-1)∪(1,+∞) |
3x+8 |
2x+1 |
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