AE |
AF |
EP |
OA |
FO |
OP |
AM |
AN |
EP |
OA |
y |
x |
y |
x |
AE |
AF |
AE |
AF |
y11 |
4 |
y22 |
4 |
|
4 |
k |
8 |
k |
1 |
2 |
AM |
AN |
y12 |
4 |
y22 |
4 |
y12 |
4 |
y22 |
4 |
y12y22 |
16 |
1 |
4 |
4 |
k2 |
1 |
4 |
16 |
k2 |
16 |
k |
8 |
k |
k+12 |
k |
AM |
AN |
1 |
2 |
F1P |
F2P |
x2 |
a2 |
y2 |
b2 |
PF1 |
PF2 |
x2 |
16 |
y2 |
4 |
x2 |
a2 |
y2 |
b2 |
A.∠PFR>∠QFR |
B.∠PFR=∠QFR |
C.∠PFR<∠QFR |
D.∠PFR与∠AFR的大小不确定 |
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