1÷u+1÷v=1÷f
Rearrange this to make u the subject.
1÷u+1÷v=1÷f. Rearrange this to make u the subject.?
2018-03-14 1:39 am
回答 (5)
2018-03-14 1:42 am
Multiply by uvf to begin.
1÷u + 1÷v = 1÷f
vf + uf = uv
uv - uf = vf
u = vf / (v - f)
1÷u + 1÷v = 1÷f
vf + uf = uv
uv - uf = vf
u = vf / (v - f)
2018-03-14 1:56 am
1÷u+1÷v=1÷f
1/u + 1/v = 1/f
1/u = 1/f - 1/v
1/u = (v - f)/(fv)
u/1 = fv/(v - f)
u = fv/(v - f), where u, v and f ≠ 0, v ≠ f
1/u + 1/v = 1/f
1/u = 1/f - 1/v
1/u = (v - f)/(fv)
u/1 = fv/(v - f)
u = fv/(v - f), where u, v and f ≠ 0, v ≠ f
2018-03-14 2:24 am
1/u + 1/v = 1/f
f/u + f/v = 1
fv + fu = uv
uv - fu = fv
u(v - f) = fv
u = fv/(v - f)
f/u + f/v = 1
fv + fu = uv
uv - fu = fv
u(v - f) = fv
u = fv/(v - f)
2018-03-14 4:11 am
1/u + 1/v = 1/f
1/u = 1/f - 1/v
1/u = (v-f) / (fv)
u = fv / (v-f)
1/u = 1/f - 1/v
1/u = (v-f) / (fv)
u = fv / (v-f)
2018-03-14 3:58 am
1÷u+1÷v = 1÷f
(1/u) + (1/v) = 1/f
1 + u/v = u/f
(u/f) - (u/v) = 1
u(1/f - 1/v) = 1
u(v-f)/(fv) = 1
u = fv/(v-f)
(1/u) + (1/v) = 1/f
1 + u/v = u/f
(u/f) - (u/v) = 1
u(1/f - 1/v) = 1
u(v-f)/(fv) = 1
u = fv/(v-f)
收錄日期: 2021-04-24 01:03:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20180313173913AAT6KNG