Chapter 2 LTI Systems 3. The associative Property(结合律) x()+(G)+()=x(O)*{(0)*1()} x可*h1[吗*h四=x小*{[*h[ x h(0)b2() h()*h Commutative Property x h()h1( h2()+h() y Associative Property5 Chapter 2 LTI Systems 3. The Associative Property (结合律） xnh1 nh2 n= xnh1 nh2 n x(t)h1 (t)h2 (t) = x(t)h1 (t)h2 (t) h (t) 1 x(t) h (t) 2 y(t) x(t) y(t) h (t) h (t) 1  2 x(t) y(t) h (t) h (t) 2  1 Commutative Property h (t) 1 x(t) h (t) 2 y(t) Associative Property