Re: [理工] [工數] 98台聯大工數C

看板Grad-ProbAsk作者 (XDeutesh)時間12年前 (2011/09/17 21:59), 編輯推噓1(100)
留言1則, 1人參與, 最新討論串2/2 (看更多)
※ 引述《OKOK98 (UTN)》之銘言: : Let x(t)=cos(t)u(t) where u(t) denotes the unit step (Heaviside step) : function.Find the concatenated convolution x(t)*u(t)*u(t-1) using : Laplace transform method ,where * is the convolution operator. L{ x(t)*u(t)*u(t-1) } s 1 1 -s = ───── ── ── e s^2 + 1 s s -s 1 -s = (──── + ────) e s^2 + 1 s -1 L => u(t-1) - cos(t-1) u(t-1) -- -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.161.122.147

09/18 14:53, , 1F
OKOK謝謝
09/18 14:53, 1F
文章代碼(AID): #1ETAVK-e (Grad-ProbAsk)
文章代碼(AID): #1ETAVK-e (Grad-ProbAsk)