4(x-a) |
x2+4 |
4x |
x2+4 |
4(-x) |
(-x)2+4 |
4x |
x2+4 |
4(x-a) |
x2+4 |
8 |
5 |
8 |
5 |
4(x-a) |
x2+4 |
4(x2+4)-4(x-a)•2x |
(x2+4)2 |
-4x2+8ax+16 |
(x2+4)2 |
-4(x2-2ax-1)+12 |
(x2+4)2 |
-4(x2-2ax-1)+12 |
(x2+4)2 |
A.y=-x2 | B.y=x2-2 | C.y=(
| D.y=log2
|
1 |
2x+1 |
A.单调递增无最大值 | B.单调递增有最大值 |
C.单调递减无最小值 | D.单调递减有最小值 |
8000 |
100-p |
A.f(0)>f(1) | B.f(0)>f(2) | C.f(0)>f(3) | D.f(0)<f(4) |
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