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作者 destinycode 在 PTT [ Math ] 看板的留言(推文), 共123則
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5F推:y(x) has to be at least piecewise continuous08/17 15:00
4F推:如果用到的數學定理都要證 你大概第一題還沒寫完就打07/03 14:30
5F→:下課鐘了......07/03 14:30
1F推:你出球棒我出鐵釘 是可以打會的02/12 23:56
1F推:首先先將sint與e^t的變數化成t-pi/2的形式 再由第一01/08 09:44
2F→:與第二平移定理求解01/08 09:44
3F→:原式=L{H(t-pi/2)*cos(t-pi/2)*e^(t-pi/2)*e^(pi/2)}01/08 09:47
4F→:ANS:e^(pi/2)*e^(-s*pi/2)*(s-1)/[(s-1)^2+1]01/08 09:50
5F→:計算若有錯誤敬請海涵01/08 09:52
10F推:linearly dependent是Wronskin的充分條件但不是必要11/08 15:29
11F→:條件11/08 15:30
12F→:若W=0 則應該由線性獨立的定義直接判別11/08 15:32