A.x3=x1+x2 | B.x3=
| ||||
C.x1x3=x1x2+x2x3 | D.x1x2=x1x3+x2x3 |
b |
k |
k |
a |
b |
a |
1 |
x1 |
1 |
x2 |
k |
b |
A.20 | B.24 | C.16 | D.18 |
x2 |
10-m |
y2 |
6-m |
x2 |
5-m |
y2 |
9-m |
A.焦距相等 | B.离心率相等 | C.焦点相同 | D.准线相同 |
A.y2=6x | B.
| ||||
C.
| D.x2+y2=25 |
3 |
AM |
MB |
A.1 | B.2 | C.3 | D.4 |
A.
| B.
| C.
| D.
|
© 2017-2019 超级试练试题库,All Rights Reserved.