题目
| 3 |
| x-2 |
变式练习:y=
| 3+x |
| x-2 |
探究:y=
| 3 |
| x-2 |
| 3 |
| x |
答案
| 3 |
| x-2 |
故当x=3时,函数有最大值3
当x=6时函数有最小值
| 3 |
| 4 |
变式练习:y=
| 3+x |
| x-2 |
| x-2+5 |
| x-2 |
| 5 |
| x-2 |
所以当x=3时,函数有最大值6
当x=6时,函数有最小值
| 9 |
| 4 |
探究:y=
| 3 |
| x |
| 3 |
| x-2 |
故答案为:3,
| 3 |
| 4 |
| 9 |
| 4 |
| 3 |
| x |
| 3 |
| x-2 |
| 3 |
| x-2 |
| 3+x |
| x-2 |
| 3 |
| x-2 |
| 3 |
| x |
| 3 |
| x-2 |
| 3 |
| 4 |
| 3+x |
| x-2 |
| x-2+5 |
| x-2 |
| 5 |
| x-2 |
| 9 |
| 4 |
| 3 |
| x |
| 3 |
| x-2 |
| 3 |
| 4 |
| 9 |
| 4 |
| 3 |
| x |
| 3 |
| x-2 |