题目内容
已知0<a<1,化简
-
=______.
a+
|
a+
|
∵0<a<1,
∴
<
,
∴原式=
-
=
-
=
+
-(
-
)=2
.
∴
| a |
| 1 | ||
|
∴原式=
(
|
(
|
=
(
|
(
|
=
| a |
| 1 | ||
|
| 1 | ||
|
| a |
| a |
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