1000/(X+20)*60=106.95
(1)這個X的數學公式怎麼求?或VB的公式是如何?
(2)160.95小數點如果去除公式會一樣嗎 ...
1000/(X+20)*60=106.95
→ 1000=106.95/60*(X+20)
→ X=1000/106.95*60-20=541.009
1000/(X+20) ...
740831 發表於 2009-12-9 21:58
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