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An FIR system is also called as “recursive system”.

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An FIR system is also called as “recursive system”.

(a) True

(b) False

I got this question in an interview for job.

My question is from Implementation of Discrete Time Systems topic in section Discrete Time Signals and Systems of Digital Signal Processing

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The correct choice is (b) False

The best explanation: For a system to be recursive, the output of the system must be dependent only on the past values of the output. For an FIR system the output of the system must be depending only on the present and past values of the input. So, FIR system is not an recursive system.

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