求卷积s(t)=sin(t)u(t)*u(t-1)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/12 19:33:47
求卷积s(t)=sin(t)u(t)*u(t-1)
s(t)=sin(t)u(t)*u(t-1)
=∫(-∞→+∞)sin(x)u(x)u(t-1-x)dx
=∫(-∞→+∞)sin(x)u(x)u(t-1-x)dx
=∫(0→t-1)sin(x)dx (t>1)
=-cos(t-1)+1 (t>1)
t≤0时,s(t)=0
=∫(-∞→+∞)sin(x)u(x)u(t-1-x)dx
=∫(-∞→+∞)sin(x)u(x)u(t-1-x)dx
=∫(0→t-1)sin(x)dx (t>1)
=-cos(t-1)+1 (t>1)
t≤0时,s(t)=0
一道信号与系统题目已知:f(t)=u(t-3)*u(t-7)*δ(t-1),求f(t)注:*是卷积
s t u a + u t s t ------------------ t t u t t 求a t u s分别代表什
LTI系统输入为f(t)=δ(t) +δ( t− 1),响应为y(t)=u(t)-u(t-1),求该系统单位
声音物理公式u=s/t
u=311sin(314t+30.)V求有效值u和频率fo
s t u a+u t s t________t t u t t请问以上的字母各代表什么数字?
s t u a s=+ u t s t u=—————————— t=t t u t t a=
求(t-1)[u(t-1)-u(t-2)]的拉普拉斯变换
请教高手指点matlaB程序画图:如下要求:u(t)=sin(100t),dH(t)/dt=H(t)^3+u(t)H(t
求f(t)= u(1-t)e-t的傅氏变换
T.A.T.U经典歌曲
don't u know?can't u