1 |
4 |
3 |
8 |
A.-4e2+
| B.-4e2-
| C.4e2+
| D.4e2-
|
1 |
4 |
x |
3 |
8 |
x |
| ||
2 |
| ||
4 |
e2 |
3 |
2 |
x |
x |
e2 |
| ||
4 |
0 |
x |
e2 |
| ||
4 |
a |
b |
AB |
a |
b |
AC |
a |
b |
e1 |
e2 |
OM |
e1 |
1 |
4 |
e2 |
ON |
e1 |
1 |
4 |
e2 |
a |
b |
c |
a |
b |
c |
a |
b |
c |
d |
d |
c |
a |
b |
d |
c |
d |
CB |
PB |
PA |
A.AC边所在的直线上 | B.BC边所在的直线上 |
C.AB边所在的直线上 | D.△ABC的内部 |
A.5 | B.6 | C.7 | D.8 |
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