2 |
a |
1 |
b |
m |
2a+b |
2 |
a |
1 |
b |
m |
2a+b |
2(2a+b) |
a |
2a+b |
b |
2b |
a |
2a |
b |
2b |
a |
2a |
b |
ab |
A.
| B.
| C.
| D.
|
1 |
a |
1 |
b |
A.最小值-1 | B.最小值-2 | C.最大值-2 | D.最大值-1 |
1 |
a |
1 |
b |
1 |
x |
4 |
y |
1 |
x |
4 |
y |
1 |
2 |
1 |
x |
4 |
y |
1 |
2 |
y |
x |
4x |
y |
y |
x |
4x |
y |
|
1 |
x |
4 |
y |
1 |
2 |
9 |
2 |
|
|
1 |
x |
4 |
y |
9 |
2 |
1 |
A |
9 |
B+C |
AB |
AC |
AG |
A.
| B.
| C.
| D.
|
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