1+x |
x-1 |
1+x |
x-1 |
1+x |
x-1 |
1-x |
-x-1 |
x-1 |
x+1 |
1+x |
x-1 |
1+x |
x-1 |
1+x |
x-1 |
x-1+2 |
x-1 |
2 |
x-1 |
1 |
x1-1 |
1 |
x2-1 |
2 |
x1-1 |
2 |
x2-1 |
2 |
x1-1 |
2 |
x2-1 |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
c |
a |
b |
c |
a |
b |
c |
p |
p |
a |
b |
c |
A.0 | B.1 | C.2 | D.3 |
a |
b |
m |
n |
A.对于
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B.若
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C.若cos<
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D.若二面角α-l-β的大小为γ,则γ=<
|
1 |
4 |
x |
A.4 | B.3 | C.2 | D.1 |
A.椭圆的离心率大于1 | ||||
B.双曲线
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C.∀a,b∈R,
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D.∃x∈R,sinx+cosx=
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