1 |
y1 |
1 |
y2 |
1 |
b |
x |
a |
y |
b |
-2pa |
b |
1 |
y1 |
1 |
y2 |
y1+y2 |
y1y2 |
| ||
-2pa |
1 |
b |
y1 |
x1 |
y2 |
x2 |
(y1y2)2 |
4p2 |
(4p2)2 |
4p2 |
y1y2 |
x1x2 |
-4p2 |
4p2 |
|
CA |
BC |
x2 |
36 |
y2 |
9 |
A.x+4y=0 | B.x+4y-10=0 | C.x+4y-6=0 | D.x-4y-10=0 |
x2 |
a2 |
y2 |
b2 |
AM |
3 |
4 |
AB |
5 |
4 |
2
| ||
3 |
3 |
2 |
2 |
OA |
OB |
|CD| |
|AB| |
2 |
F2A |
F2B |
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