f(x) = 1 - 2e^(-10s) 2e^(-20s) - 2e^(-30s) ................
怎麼樣化簡成下列格式
1- e^(-10s)
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1 e^(-10s)
2007-02-26 12:20:23 · 1 個解答 · 發問者 齊文 2 in 教育與參考 ➔ 考試
f(x) = 1 - 2e-10s ＋2e-20s - 2e-30s＋...
＋）e-10s *f(x) =e-10s - 2e-20s ＋ 2e-30s - ...
－－－－－－－－－－－－－－－－－－－－
(1＋e-10s) f(x) = 1 - e-10s
f(x) = (1 - e-10s ) / (1＋e-10s)
如果有問題, 請來函討論. 不然, 我可能會錯失你再補充的疑點.
2007-02-27 02:35:36 · answer #1 · answered by JJ 7 · 0⤊ 0⤋