x2 |
16 |
y2 |
9 |
A.
| B.
| C.
| D.16 |
x2 |
16 |
y2 |
9 |
y2-y1 |
x2-x1 |
|
x12-x22 |
16 |
y12-y22 |
9 |
(x1+x2)(x1-x2) |
16 |
(y1+y2)(y1-y2) |
9 |
y2-y1 |
x2-x1 |
9 |
16 |
y0 |
x0 |
y0-0 |
x0-0 |
y0 |
x0 |
9 |
16 |
y2 |
4 |
8y2 |
p2 |
A.1 | B.
| C.
| D.2 |
y2 |
3 |
PF1 |
PF2 |
AM |
MB |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
3 |
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