x2 |
a2 |
y2 |
b2 |
| ||
2 |
2 |
OA |
OB |
OP |
2 |
| ||
|
x2 |
a2 |
y2 |
b2 |
| ||
2 |
c |
a |
| ||
2 |
a2-1 |
a2 |
1 |
2 |
x2 |
2 |
1 |
2 |
OA |
OB |
OP |
x1+x2 |
t |
8k2 |
t(1+2k2) |
-4k |
t(1+2k2) |
(8k2)2 |
t2(1+2k2)2 |
(-4k)2 |
t2(1+2k2)2 |
8 |
1+2k2 |
1 |
2 |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
3 |
2 |
x2 |
a2 |
y2 |
b2 |
PA |
PB |
PO |
x2 |
a2 |
y2 |
b2 |
|AQ|•|AR| |
|OP|2 |
π |
4 |
2 |
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