[理工] [工數]-step function
很雜魚的問題...
ex: y(t) = t , 0<t<1
0 , t>1 , t>0
看書上是這樣寫的:
let y = t*u(t) - t*u(t-1)
我覺得應該要寫這樣:
y = t*u(t) - (t-1)*u(t-1) 比較正確@@!?
sorry文意不太清楚
a -s
像是LT時, Y(s) = _________ * e y(t) = sin[a(t-1)]*u(t-1)
s^2 + a^2 ,
那反過來看的話, 如果要對 y(t) = sin(at)*u(t-1) 做L.T.
^^^^^^^^^這樣寫是正確的嗎!?
請各位糾正我的觀念
謝謝
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