3 |
AP |
AD |
A.为定值4 | B.最大值为8 |
C.最小值为2 | D.与P的位置有关 |
AP |
AD |
AD |
DP |
AD |
AD |
AD |
DP |
AD |
1 |
2 |
AD |
| ||||
2 |
AD |
| ||||||||
4 |
16+16+2×4×4×(-
| ||
4 |
a |
b |
c |
a |
b |
a |
c |
b |
c |
A.-2 | B.
| C.-1 | D.1-
|
a |
b |
a |
b |
A.向量
| B.向量
| ||||||||||||||||
C.向量
| D.向量
|
x2 |
a2 |
AC |
F1F2 |
AF1 |
AF2 |
AF1 |
PE |
PF |
GA |
GB |
GC |
0 |
MA |
MB |
MC |
GM |
AB |
2 |
PF |
FQ |
RF |
FN |
PF |
RF |
a |
b |
u |
a |
b |
a |
b |
u |
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