题目内容
若x≠0,则
的最大值是______.
| ||||
| x |
原式=
-
=
-
=
-
=
≤
当x=
时,代数式的最大值为:
,即.
-
.
故答案是:
-
.
| ||
| x |
| ||
| x |
=
|
|
=
(
|
(
|
=
| 1 | ||||||||
|
当x=
| 1 |
| x |
| 1 | ||||
|
| 3 |
| 2 |
故答案是:
| 3 |
| 2 |
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