题目内容
已知:
=
+
(f,u,v均不为0),试用f,u表示v,则v=______.
1 |
f |
1 |
u |
1 |
v |
∵
=
+
,
∴uv=fv+fu,
∴v=
.
故答案是
.
1 |
f |
1 |
u |
1 |
v |
∴uv=fv+fu,
∴v=
fu |
u-f |
故答案是
fu |
u-f |
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题目内容
1 |
f |
1 |
u |
1 |
v |
1 |
f |
1 |
u |
1 |
v |
fu |
u-f |
fu |
u-f |