1 |
a |
1 |
b |
1 |
c |
M |
a+b+c |
A.6+2
| B.5+ 3
| C.6+2
| D.9 |
a |
c |
b |
c |
1 |
a |
1 |
b |
1 |
c |
1+(sinα+cosα)(1+sinαcosα) |
sinαcosα |
2 |
t2-1 |
2 |
1 |
a |
1 |
b |
1 |
c |
2 |
t-1 |
2 |
x |
2 |
1 |
a |
1 |
b |
1 |
c |
2 |
t-1 |
2 |
2 |
A.2πR2 | B.
| C.
| D.
|
A.ab=AG | B.ab≥AG | C.ab≤AG | D.不能确定 |
1 |
x |
A.有最大值 | B.有最小值 | C.是增函数 | D.是减函数 |
4 |
x |
A.1 | B.2 | C.4 | D.8 |
x2 |
a2 |
y2 |
b2 |
b2+1 |
3a |
A.
| B.
| C.2 | D.1 |
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