1 |
c |
2 |
A.等腰三角形 | B.等边三角形 |
C.直角三角形 | D.等腰直角三角形 |
1 |
c |
2 |
b |
c |
| ||
2 |
2 |
π |
4 |
π |
4 |
2 |
| ||
2 |
| ||
2 |
logx
|
A.3 | B.
| C.3或
| D.无解 |
A.ab>1 | B.ab=1 | C.ab<1 | D.b<1 |
1 |
2 |
b |
A.6 | B.7 | C.8 | D.9 |
A.若a,b,c是等差数列,则lga,lgb,lgc是等比数列 |
B.若a,b,c是等比数列,则lga,lgb,lgc是等差数列 |
C.若a,b,c是等差数列,则10a,10b,10c是等比数列 |
D.若a,b,c是等比数列,则10a,10b,10c是等差数列 |
A.8 | B.-8 | C.0 | D.10 |
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