题目内容
在公式
+
=
中,已知R1、R2,且R1+R2≠0,则R=______.
| 1 |
| R1 |
| 1 |
| R2 |
| 1 |
| R |
∵
+
=
,
∴通分得,
=
,
又∵R1+R2≠0,
∴R=
.
故答案为
.
| 1 |
| R1 |
| 1 |
| R2 |
| 1 |
| R |
∴通分得,
| R1+R2 |
| R1R2 |
| 1 |
| R |
又∵R1+R2≠0,
∴R=
| R1R2 |
| R1+R2 |
故答案为
| R1R2 |
| R1+R2 |
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