A.焦点在x轴上的椭圆 | B.焦点在x轴上的双曲线 |
C.焦点在y轴上的椭圆 | D.焦点在y轴上的双曲线 |
x2 | ||
|
y2 | ||
|
n |
m |
y2 | ||
-
|
x2 | ||
-
|
n |
m |
x2 |
16 |
y2 |
9 |
A.2012 | B.25 | C.10 | D.4 |
x2 |
3 |
y2 |
4 |
A.
| B.
| C.
| D.
|
x2 |
36 |
y2 |
100 |
x2 |
a2 |
y2 |
b2 |
A.(1,2) | B.(1,+∞) | C.(2,1+
| D.(1,1+
|
y2 |
4 |
A.y=
| B.y=±2x | C.y=2x | D.y=-2x |
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