a |
b |
OP |
OA |
OB |
(x+2)2+y2 |
(x-2)2+y2 |
x2 |
16 |
y2 |
12 |
OP |
OA |
OB |
|
16k |
4k2+3 |
-32 |
4k2+3 |
OP |
OA |
OB |
OA |
OB |
OA |
OB |
32 |
4k2+3 |
16k |
4k2+3 |
a |
b |
a |
b |
a |
b |
AB |
a |
AD |
b |
AC |
c |
BD |
d |
A.
| B.
| C.
| D.
|
MA |
MB |
MC |
A.
| B.4
| C.4
| D.4
|
1 |
3 |
1 |
2 |
a |
b |
a |
b |
A.2
| B.2
| C.
| D.
|
BA |
BC |
AC |
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