把下列的公式的主項變換為x的題目要步驟+答案，其他題目只須答案
https://docs.google.com/document/d/1uQ7Q8slakXiPwM5WMPMc_OTM8kwB9W1FS10KQ8N0Lg0/edit?usp=sharing
https://docs.google.com/document/d/1RxMIfb2GRb0weLF-0WCahwgRgIZSX5kJ3NZddbjwMtE/edit?usp=sharing
伐數分式及公式6(請盡快回答)
2015-04-15 5:52 am
回答 (1)
2015-04-15 6:20 am
✔ 最佳答案
2(i)z=y(x+3)
x+3=z/y
x=z/y -3
2(ii)
m=(n/2)(2-x)
2-x=2m/n
x=2-2m/n
3(i)
y=(5-x)/(x+2)
xy+2y=5-x
x(y+1)=5-2y
x=(5-2y)/(y+1)
3(ii)
y-2=(x-1)/2x
2xy-2x=x-1
2xy-x=-1
x(2y-1)=-1
x=1/(1-2y)
(ii)
C=-5 C=0 C=20 C=100
F=23 F=32 F=68 F=212
(iv)
F=23 F=32 F=68 F=212
C=-5 C=0 C=20 C=100
(v)
F，C
收錄日期: 2021-04-15 19:03:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150414000051KK00099