ε(k)*ε(k-1)卷积怎么求.

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ε(k)*ε(k-1)卷积怎么求.
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ε(k)*ε(k-1)卷积怎么求.
ε(k)*ε(k-1)卷积怎么求.

ε(k)*ε(k-1)卷积怎么求.
ε(k)*ε(k-1)=ε(k)*[ε(k)*δ(k-1)]=ε(k)*ε(k)*δ(k-1)=(k+1)ε(k)*δ(k-1)=kε(k-1)