5 |
2 |
3 |
2 |
. |
AB |
. |
FM |
A.
| B.5
| C.10
| D.20
|
5 |
2 |
3 |
2 |
FM |
3 |
2 |
3 |
2 |
AB |
. |
AB |
. |
FM |
3 |
2 |
3 |
2 |
y2-y1 |
x2-x1 |
2(x1-x2)2 |
2[(x1+x2)2-4x1x2] |
10 |
|1-3-4| | ||
|
5
| ||
2 |
1 |
2 |
10 |
5
| ||
2 |
5 |
A.1 | B.2 | C.3 | D.4 |
A.2x+3y-18=0 | B.2x-y-2=0 |
C.3x-2y+18=0或x+2y+2=0 | D.2x+3y-18=0或2x-y-2=0 |
A.2 | B.
| C.
| D.
|
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