標題: [學術探討] 中學雞數.. [打印本頁]
作者:
mebius 時間: 2011-8-11 23:52 標題: 中學雞數..
A. Solve the following literal equations for X.
cx-bc
17. -------- = -2e
dx
個ans係
dc
---------
c+2ed
求教,THX!
作者:
UniCorn 時間: 2011-8-12 00:02
原帖由 mebius 於 2011-8-11 11:52 PM 發表
A. Solve the following literal equations for X.
cx-bc
17. -------- = -2e
dx
個ans係
dc
---------
c+2ed
求教,THX!
是bc/(c+2ed) 吧...
cx-bc
-------- = -2e
dx
-2edx = cx-bc
cx+2edx = bc
(c+2ed)x = bc
x = bc/(c+2ed)
作者:
mebius 時間: 2011-8-12 00:05 標題: 回復 #2 UniCorn 的帖子
咁個model ans. 錯左..
btw. thank you.
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