a |
b |
AB |
a |
b |
AC |
a |
b |
AB |
AC |
AB |
AC |
1 |
3 |
1 |
3 |
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 |
a |
b |
AB |
a |
b |
AC |
a |
b |
A.λ+μ=2 | B.λ-μ=1 | C.λμ=-1 | D.λμ=1 |
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