2 |
1 |
2 |
2 |
2 |
OP |
OQ |
AB |
2 |
y-0 | ||
x+
|
y-0 | ||
x-
|
2 |
2 |
2 |
2 |
2 |
2
| ||
1 +k2 |
OP |
OQ |
2 |
2 |
2
| ||
1 +k2 |
2
| ||
1 +k2 |
2 |
2 |
2 |
AB |
2 |
2 |
OP |
OQ |
AB |
2
| ||
1 +k2 |
2 |
2 |
2
| ||
1 +k2 |
2 |
4-4k |
1+k2 |
i |
j |
a |
i |
j |
b |
i |
j |
a |
b |
OP |
OA |
OB |
AP |
AB |
AC |
A.最大值为8 | B.是定值6 | C.最小值为2 | D.是定值2 |
OA |
OB |
OC |
OA |
OB |
1-x |
ax |
OC |
o |
1 |
2 |
1 |
3 |
1 |
4 |
1 |
n |
OP |
1 |
3 |
OA |
OB |
OC |
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