a |
a2-1 |
f(2) |
2 |
f(1) |
1 |
f(3) |
3 |
f(2) |
2 |
f(1) |
1 |
f(2) |
2 |
1 |
2 |
f(3) |
3 |
a2+1+a-2 |
3 |
f(2) |
2 |
1 |
2 |
f(1) |
1 |
f(3) |
3 |
f(2) |
2 |
f(3) |
3 |
f(2) |
2 |
(a-a-1)2 |
12 |
f(3) |
3 |
f(2) |
2 |
f(1) |
1 |
f(x+1) |
x+1 |
f(x) |
x |
f(x) |
x |
xf/(x)-f(x) |
x2 |
a |
x2 |
x(ax+a-x)lna-(ax-a-x) |
a2-1 |
x(ax+a-x)lna-(ax-a-x) |
a2-1 |
x(ax-a-x)ln2a |
a2-1 |
x(ax-a-x)ln2a |
a2-1 |
f(x+1) |
x+1 |
f(x) |
x |
|
A.(0,1] | B.[1,+∞) | C.(0,+∞) | D.(0,2] |
A.y=
| B.y=2x+
| ||||||
C.y=2x+4•2-x(x∈R) | D.y=
|
A.[2,22] | B.[6,22] | C.[0,20] | D.[6,24] |
1 |
3 |
| ||
x |
A.[-4,0)∪(0,4] | B.[-4,4] | C.(-∞,-4]∪[4,+∞) | D.[-4,0)∪[4,+∞) |
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