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What is the rule h*x = x*h called?

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in Signals and Systems by (1.2m points)
What is the rule h*x = x*h called?

(a) Commutativity rule

(b) Associativity rule

(c) Distributive rule

(d) Transitive rule

I had been asked this question during a job interview.

Question is from Properties of LTI Systems in section Time-Domain Analysis of CT Systems of Signals and Systems

1 Answer

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by (42.1k points)
The correct choice is (a) Commutativity rule

Explanation: By definition, the commutative rule h*x=x*h.

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