Find the value of X in the following?
回答 (1)
2007-03-02 6:47 am
✔ 最佳答案
y=a sqr (cx-b/cx+b)y/a = sqr (cx-b/cx+b)
(y/a) ^ 2 = (cx-b/cx+b)
cxy ^ 2 + by ^ 2 = a ^ 2 cx - a ^ 2 b
a ^ 2 cx - cxy ^ 2 = by ^ 2 + a ^ 2 b
(a ^ 2 c - cy ^ 2) x = by ^ 2 + a ^ 2 b
x = (by ^ 2 + a ^ 2 b)/c(a ^ 2 - y ^ 2)
x = b(y ^ 2 + a ^ 2)/c(a - y)(a + y)
收錄日期: 2021-04-13 00:06:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070301000051KK04741