题目内容
若函数f(x)=
则f(-
)的值等于______.
|
| 3 |
| 2 |
f(-
)=f(-
+1)=f(-
)
=f(-
+1)
=f(-
+1+1)
=f(
)
=2×
-1=2.
则f(-
)的值等于2
故答案为:2.
| 3 |
| 2 |
| 3 |
| 2 |
| 1 |
| 2 |
=f(-
| 1 |
| 2 |
=f(-
| 1 |
| 2 |
=f(
| 3 |
| 2 |
=2×
| 3 |
| 2 |
则f(-
| 3 |
| 2 |
故答案为:2.
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