我想問關於公式主項變換.
請清楚說明怎樣變換
最好是給多條例題解譯.
T|-|Z . :D
公式主項變換
2007-12-02 10:47 pm
回答 (1)
2007-12-08 1:07 pm
✔ 最佳答案
其實最簡單既方法就係expand開它...之後再將相同既野放一齊...
最後再移項解決
1.(a-b)x-(a+b)y=0 [a]
ax - bx - ay - by = 0
a(x - y) - b(x + y) = 0
a(x - y) = b(x + y)
a = b(x + y) / (x - y)
2.1/y=1/x+c [x]
1 / y - c = 1 / x
(1 - cy) / y = 1 / x
x = y / (1 - cy)
3.q=p/a+p/b [p]
q = p (1 / a + 1 / b)
q = p (a + b) / ab
p = qab / (a + b)
希望解答到你 ^^
參考: 自己
收錄日期: 2021-04-13 14:37:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071202000051KK02219