| 1 |
| 2 |
| 4 |
| 5 |
| 9 |
| 4 |
| 9 |
| 5 |
| a |
| x-a |
| -x2+(a+1)x |
| x-a |
| 4 |
| 5 |
| a |
| x-a |
| -x2+(a+1)x |
| x-a |
| x | (a,0) | 0 | (0,a+1) | a+1 | (a+1,+∞) |
| f′(x) | - | 0 | + | 0 | - |
| f(x) | ↘ | 极小值 | ↗ | 极大值 | ↘ |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 4 |
| 5 |
| 4 |
| 5 |
| a |
| a-1 |
| 1 |
| 2 |
| 4 |
| 5 |
| 9 |
| 4 |
| 1 |
| 2 |
| 4 |
| 5 |
| 9 |
| 4 |
| 1 |
| 2 |
| 4 |
| 5 |
| 9 |
| 4 |
| 1 |
| 2 |
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