x2 |
9 |
y2 |
4 |
A.大于 | B.小于 | C.等于 | D.大于或等于 |
9 | ||
|
9 | ||
|
9 | ||
|
xQ-
| ||||
cosθ |
| ||||
cosθ |
|F2P| |
|F2Q| |
| PR| |
|QR| |
x2 |
a2 |
y2 |
b2 |
x |
a |
y |
b |
4 |
5 |
3 |
x2 |
4 |
y2 |
12 |
A.(0,8) | B.(-2
| C.(0,2
| D.(-4,0) |
x2 |
a2 |
y2 |
b2 |
5 |
4 |
A.4 | B.7 | C.6 | D.5 |
x2 |
a2 |
y2 |
b2 |
A.(2,+∞) | B.(1,2) | C.(1,
| D.(
|
© 2017-2019 超级试练试题库,All Rights Reserved.