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Moment of Inertia of a Disc

If the step r...

Question

If the step response of a system is given by A(-n) , then the impulse response of the same system is

A

A(-n) - A(-n+1)

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B

A(-n) + A(-n+1)

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C

A(-n) - A(-n-1)

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D

A(-n) - A(-n-1)

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Solution

The correct option is A A(-n) - A(-n+1)
h(n) = s(n)-s(n-1)
where h(n) is the impulse response and s(n) is the step response
h(n) = A(-n) - A(-n+1)

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