engineering recuitment HPCL Junior Executive 2025 Mock Test Signals and Systems Discrete Time Signals and Systems Characteristic of Systems
The exponential x(t) = e-at can be written as x(t) = e-at u(t) + e-at u(-t) where the first term represent the
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anti- causal part of x(t)
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causal part of x(t)
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non- causal part of x(t)
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formal part of x(t)