x2 |
a2 |
y2 |
b2 |
| ||
3 |
OA |
1 |
2 |
| ||
2 |
| ||
3 |
3 |
3-1 |
2 |
x2 |
3 |
y2 |
2 |
|
6 |
5 |
3 |
5 |
(x1-x2)2+(y1-y2)2 |
2 |
(x1+x2)2-4x1x2 |
2 |
(
|
8
| ||
5 |
OA |
OB |
OA |
OB |
|
2a2 |
a2+b2 |
a2(1-b2) |
a2+b2 |
2a2(1-b2) |
a2+b2 |
2a2 |
a2+b2 |
1 |
1-e2 |
1 |
2 |
1 |
1-e2 |
1 |
2 |
| ||
2 |
1 |
4 |
1 |
2 |
1 |
2 |
3 |
4 |
4 |
3 |
1 |
1-e2 |
7 |
3 |
1 |
1-e2 |
7 |
6 |
3 |
2 |
| ||
6 |
| ||
2 |
| ||
3 |
6 |
6 |
x2 |
3 |
y2 |
4 |
x2 |
a2 |
y2 |
b2 |
x2 |
a2 |
y2 |
b2 |
x2 |
a2 |
y2 |
b2 |
3 |
x2 |
25 |
y2 |
16 |
A.2 | B.3 | C.5 | D.7 |
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