a |
b |
a |
b |
OP |
OA |
OB |
a |
b |
a |
b |
x2 |
12 |
y2 |
16 |
OP |
OA |
OB |
0 |
|
18k |
4+3k2 |
21 |
4+3k2 |
OP |
OA |
OB |
OA |
OB |
OA |
OB |
OA |
OB |
21 |
4+3k2 |
18k |
4+3k2 |
5 |
16 |
| ||
4 |
| ||
4 |
x2 |
a2 |
y2 |
b2 |
A.
| B.
| C.
| D.
|
x2 |
4 |
y2 |
3 |
MA |
AF |
MB |
BF |
3 |
3 |
|AB| |
|FD| |
A.(-
| B.[-
| C.(-∞,-
| D.(-∞,-
|
© 2017-2019 超级试练试题库,All Rights Reserved.