A.(e2x)′=e2x | ||||||
B.(
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C.(log2x)′=
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D.(x2cosx)′=2xcosx+x2sinx |
x |
1 |
2 |
1 |
2 |
1 | ||
2
|
A.f(2a)<f(3)<f(log2a) | B.f(log2a)<f(3)<f(2a) |
C.f(3)<f(log2a)<f(2a) | D.f(log2a)<f(2a)<f(3) |
A.(3x2+xcosx)′=6x+cosx-xsinx | ||||||
B.(sin2x)′=2cos2x | ||||||
C.(
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D.(lnx-
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A.x2-x+1 | B.(x+1)(2x-1) | C.3x2 | D.3x2+1 |
∫ | 20 |
1 | ||
1-
|
1 | ||
1+
|
A.3f(ln2)>2f(ln3) |
B.3f(ln2)=2f(ln3) |
C.3f(ln2)<2f(ln3) |
D.3f(ln2)与2f(ln3)的大小不确定 |
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