x2 |
3 |
| ||
2 |
| ||
2 |
| ||
2 |
(
| ||||
3 |
y | 21 |
| ||
2 |
3 |
| ||
2 |
|m| | ||
|
| ||
2 |
3 |
4 |
-6km |
3k2+1 |
3m2-1 |
3k2+1 |
36k2m2 |
(3k2+1)2 |
12(m2-1) |
3k2+1 |
12(k2+1)(3k2+1-m2) |
(3k2+1)2 |
3(k2+1)(9k2+1) |
(3k2+1)2 |
12k2 |
9k4+6k2+1 |
12 | ||
9k2+
|
12 |
2×3+6 |
1 |
3 |
3 |
1 |
2 |
| ||
2 |
| ||
2 |
x2 |
9 |
y2 |
4 |
A.-
| B.-1 | C.
| D.
|
1 |
2 |
x2 |
a2 |
y2 |
b2 |
a2 |
c |
F1M |
F2N |
MN |
15 |
x2 |
25 |
y2 |
9 |
A.
| B.
| C.6 | D.7 |
x2 |
a2 |
y2 |
b2 |
| ||
3 |
OM |
OA |
OB |
x2 |
m2 |
y2 |
m2-7 |
7 |
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