Question
Asked Nov 25, 2019
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If energy of signal f(t) is E then what will be the energy of the signal f(2t)?

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Expert Answer

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Step 1

For any signal f(t), then energy of the signal is defined as

E- t
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E- t

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Step 2

Using equation (1), the energy of the signal f(2t) will be

E, (2) d
->(2)
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E, (2) d ->(2)

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Step 3

To simplify equation (2), let’s assume that k=2t. Therefore, the following can be ob...

dk
->(3)
2
dk 2dt => dt =
dk
2
SCE)P"dk-->(4)
=> E2
2
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dk ->(3) 2 dk 2dt => dt = dk 2 SCE)P"dk-->(4) => E2 2

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Electrical Engineering

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