题干
已知函数 f(x)=
+4 ， g(x)=|x+1|−
x−
， h(x)={f(x),x≤−1 g(x),x>−1
| 8 |
| x |
| 1 |
| 1 |
| 3 |
| 7 |
| 3 |
| 8 |
| x |
| 1 |
| 1 |
| 3 |
| 7 |
| 3 |
