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- What does the reconstructed wave look like if we sample the input an infinitesimal amount under the Nyquist limit?

What does the reconstructed wave look like if we sample the input an infinitesimal amount under the Nyquist limit? I can intuitively picture how we can (ideally) reconstruct an input sampled at the Nyquist limit (and appropriate phase) because we are able able to get the extreme values of the input. But what if we sampled at the tiniest little itty bit

My mind is showing me a reconstructed wave that eventually damps out, like an overdamped oscillator, but I can't justify that to myself. Does anyone know?

*under*that limit?My mind is showing me a reconstructed wave that eventually damps out, like an overdamped oscillator, but I can't justify that to myself. Does anyone know?