x2 |
a2 |
y2 |
b2 |
2
| ||
3 |
2 |
2 |
2 |
2
| ||
3 |
c |
a |
2
| ||
3 |
2
| ||
3 |
2 |
x2 |
9 |
|
2km |
k2+9 |
m2-9 |
k2+9 |
CA |
CB |
CA |
CB |
12 |
5 |
12 |
5 |
3 |
5 |
1 |
2 |
1 |
2 |
3 |
5 |
(y1+y2)2-4y1y2 |
9 |
5 |
|
1 |
k2+9 |
1 |
9 |
9 |
5 |
-
|
25 |
288 |
1 |
9 |
3 |
8 |
x2 |
a2 |
y2 |
b2 |
2 |
S2(x) |
x+3 |
x2 |
a2 |
y2 |
b2 |
A.
| B.
| C.
| D.
|
x2 |
a2 |
y2 |
b2 |
2π |
3 |
A.
| B.
| C.
| D.
|
2 |
OA |
OB |
OC |
0 |
x2 |
a2 |
y2 |
b2 |
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