y2 |
4 |
A.y=±
| B.y=±2x,e=
| C.y=±
| D.y=±2x,e=
|
y2 |
4 |
a2+b2 |
5 |
b |
a |
c |
a |
5 |
x2 |
a2 |
y2 |
b2 |
A.2a+2m | B.4a+2m | C.4a | D.2a+4m |
x2 |
a2 |
y2 |
b2 |
x2 |
a2 |
y2 |
b2 |
x2 |
4 |
y2 |
3 |
A.0 | B.4 | C.8 | D.2 |
A.
| B.
| C.2 | D.
|
x2 |
10 |
y2 |
6 |
A.(-2,0),(2,0) | B.(0,-2),(0,2) | C.(0,-4),(0,4) | D.(-4,0),(4,0) |
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