x2 |
a2 |
y2 |
b |
| ||
2 |
F2M |
F2N |
2
| ||
3 |
|
2 |
a2-c2 |
x2 |
2 |
|
| ||
2 |
| ||
2 |
| ||
2 |
F2M |
F2N |
| ||
2 |
| ||
2 |
|
-4k2 |
1+2k2 |
2k2-2 |
1+2k2 |
2k |
1+2k2 |
F2M |
F2N |
F2M |
F2N |
F2M |
F2N |
(x1+x2-2)2+(y1+y2)2 |
(
|
2
| ||
3 |
17 |
40 |
|
x2 |
5 |
y2 |
6 |
A.3x-5y+13=0 | B.3x+5y+13=0 | C.5x-3y+11=0 | D.5x+3y+11=0 |
OP1 |
OP2 |
OP1, |
OP2 |
A.2,1 | B.1,2 | C.-1,2 | D.-2,1 |
3 |
A.-2 | B.0 | C.-2或0 | D.0或2 |
© 2017-2019 超级试练试题库,All Rights Reserved.