2006-12-16 09:16 PM
cami_0422
[請修改-fu] 問F.2數,,急!!!thzz~~~
In each of the following,make the letter in the square brackets the subject of the formula.
(a) p=(3V-RT)/(4T+V)-1 [T]
(b)1/y=(x-1)/(x+1)+1/z [x]
要STEP,,
最後個Ans可以唔打出黎,,
thzz~~ =]]
[[i] 本帖最後由 AH-Fu` 於 2006-12-27 10:58 PM 編輯 [/i]]
2006-12-23 01:48 PM
冰..xD
你做呢D係咪主項變換黎嫁...
如果係..
應該係咁...
a.
p=(3V-RT)/(4T+V)-1 [T]
p=T(3V-R)/(4+V)
p(4+V)=T (3V-R)
p(4+V)(3V-R)=T
T=p(4+V)(3V-R)
b.
1/y=(x-1)/(x+1)+1/z [x]
1/y=x(1-1)/(1+1)+1/z
1/y-1/z=x(1-1)/(1+1)
1/y-1/z(1+1)=x(1-1)
1/y-1/z(1+1)
___________=X
(1-1)
1/y-1/z(1+1)
x= ___________
(1-1)
唔知對不對的....!!
2006-12-27 09:40 PM
kay_0925
[quote]原帖由 [i]b!uSuet__[/i] 於 2006-12-23 01:48 PM 發表
a.
p=(3V-RT)/(4T+V)-1 [T]
p=T(3V-R)/(4+V)
p(4+V)=T (3V-R)
p(4+V)(3V-R)=T
T=p(4+V)(3V-R) [/quote]
佢第1步有個-1架喎 ?___?
同埋呢
唔可以係分數 咁樣抽 common factor
因為分子同分母既值唔同
所以a 應該係咁
P = (3V-RT)/(4T+V)-1 [T]
P+1 = (3V-RT)/(4T+V)
(P+1)(4T+V)= (3V-RT)
4TP+4T+RT= 3V-VP-V
T(4P+4+R)= 2V-VP
T(4P+4+R)= V(2-P)
V(2-P)
T =----
4P+4+R
答案應該係咁=P
2006-12-27 09:46 PM
ffu;)
[color=red][u][b]請樓主加上功課繳交日期,
謝[/b][/u][/color]
2006-12-28 04:22 PM
冰..xD
[quote]原帖由 [i]kay_0925[/i] 於 2006-12-27 09:40 PM 發表
佢第1步有個-1架喎 ?___?
同埋呢
唔可以係分數 咁樣抽 common factor
因為分子同分母既值唔同
所以a 應該係咁
P = (3V-RT)/(4T+V)-1
P+1 = (3V-RT)/(4 ... [/quote]
佢而家唔係主項變換咩= =
2006-12-29 12:30 PM
kay_0925
[quote]原帖由 [i]b!uSuet__[/i] 於 2006-12-28 04:22 PM 發表
佢而家唔係主項變換咩= = [/quote]
係呀
但係個-1佢題目有架嘛 *0*
咁你唔可以整走佢架嘛... /____\
你係 咁樣抽 "COMMON FACTOR"
(3V-RT)
p=--- - 1 {T}
(4T+V)
3V-RT
p=--- - 1
4T+V
↓
(3V-R)
p=T ----
(4+V)
咁樣係唔岩架... /____\
2006-12-29 08:26 PM
{chin}
雪,,你第一題,,
右邊denominator miss左-1 -_____-
2006-12-30 11:53 AM
{Hei}yo-hey`
f.2 d數咁深既...omg我太失敗了..
2006-12-30 09:37 PM
望月童
(3V-RT)
p= -------
(4T+U)-1
(3V-RT)
4T+U=--------
p-1
(3V-RT)
4T =(------------) - U
p-1
(3V-RT)
4T =(-----------) - U
p-1
3V-RT
T = (----------) - U
p-1
-------------
4
PS: sor..我諗唔到點樣刊簡化...
3V-RT
(----------) - U ===>成個係分子黎架..咁樣會易明dd^^
p-1
______________
第2題...我唔知+1/z係分開分式OR連埋分式..望原諒
望我可以幫助您..如我有錯..請他人幫我更改@@~
[[i] 本帖最後由 望月童 於 2006-12-30 09:42 PM 編輯 [/i]]
2006-12-31 03:12 PM
冰..xD
[quote]原帖由 [i]{chin}[/i] 於 2006-12-29 08:26 PM 發表
雪,,你第一題,,
右邊denominator miss左-1 -_____- [/quote]
係喎..
係我錯!!
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