x2 |
a2 |
y2 |
b2 |
x |
a |
y |
b |
4 |
5 |
x |
a |
y |
b |
x |
a |
y |
b |
|-b-ab| | ||
|
|ab+b| | ||
|
x |
a |
y |
b |
|b-ab| | ||
|
|ab-b| | ||
|
|ab+b| | ||
|
ab+b |
c |
|ab-b| | ||
|
ab-b |
c |
x |
a |
y |
b |
4 |
5 |
ab+b |
c |
ab-b |
c |
2ab |
c |
4 |
5 |
2 |
5 |
4 |
25 |
4 |
25 |
c |
a |
c |
a |
| ||
2 |
5 |
| ||
2 |
5 |
| ||
2 |
5 |
3 |
x2 |
4 |
y2 |
12 |
A.(0,8) | B.(-2
| C.(0,2
| D.(-4,0) |
x2 |
a2 |
y2 |
b2 |
5 |
4 |
A.4 | B.7 | C.6 | D.5 |
x2 |
a2 |
y2 |
b2 |
A.(2,+∞) | B.(1,2) | C.(1,
| D.(
|
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