10 |
3 |
f(x) |
x |
1 |
2 |
10 |
3 |
10 |
3 |
10 |
3 |
|
19 |
3 |
f(x) |
x |
1 |
2 |
lnx |
x |
1 |
x |
1 |
2 |
lnx |
x |
1 |
x |
x2-lnx |
x2 |
2x2-1 |
x |
1 |
2 |
1 |
2 |
1 |
2 |
| ||
2 |
1 |
2 |
| ||
2 |
1 |
2 |
| ||
2 |
| ||
2 |
| ||
2 |
1 |
2 |
| ||
2 |
1 |
2 |
1 |
2 |
5 |
2 |
5 |
2 |
A.0 | B.1 | C.-1 | D.2 |
f′(x) |
x-2 |
A.f(2a)<f(2)<f(log2a) | B.f(2)<f(2a)<f(log2a) |
C.f(2)<f(log2a)<f(2a) | D.f(log2a)<f(2a)<f(2) |
1 |
x2 |
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