If Output can be represented as linear combination of input then ________(a) The system is linear(b) The system is causal(c) The system is non causal(d) The system is time invariantI had been asked this question in class test.My question is from Source of Information in portion Elements of Communication System of Analog Communications

If Output can be represented as linear combination of input then _____

1.	If Output can be represented as linear combination of input then ________(a) The system is linear(b) The system is causal(c) The system is non causal(d) The system is time invariantI had been asked this question in class test.My question is from Source of Information in portion Elements of Communication System of Analog Communications
Answer» The correct CHOICE is (a) The system is linear Best EXPLANATION: The input signal is divided into sub-components, where each sub-component is processed individually and reunited. The RESULT is TESTED for additivity and homogeneity and if it satisfies both, then the system is said to be linear. It also follows superposition property.

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