y |
x |
3 |
x2 |
4 |
y2 |
3 |
x2 |
2 |
2y2 |
3 |
x2 |
2-k |
y2 |
3-k |
3 |
3 |
x2 |
a2 |
y2 |
(a+1)2 |
2 |
5 |
A.①②③ | B.②③④ | C.①②③⑤ | D.①②④⑤ |
y |
x |
y-0 |
x-0 |
y |
x |
|2k| | ||
|
3 |
3 |
y |
x |
3 |
x2 |
4 |
y2 |
3 |
1 |
2 |
x2 |
2 |
2y2 |
3 |
2 |
| ||
2 |
1 |
2 |
x2 |
2-k |
y2 |
3-k |
2 | ||
|
3 |
3 |
3 |
3 |
3 |
3 |
x2 |
a2 |
y2 |
(a+1)2 |
c2 |
a2 |
a2+(a+1)2 |
a2 |
1 |
a |
2 |
a |
1 |
a |
1 |
a |
2 |
5 |
A.0 | B.
| C.π | D.不存在 |
A.a≥
| B.a≤-
| ||||||
C.-
| D.a≤-
|
A.4 | B.
| C.-4 | D.-
|
9-x2 |
A.10 | B.11 | C.12 | D.13 |
A.0° | B.90° | C.180° | D.不存在 |
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