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Graph the piecewise function.
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Night's Sleep
The period of natural rest experienced during the night when the body and mind undergo recovery and rejuvenation.
Last Dream Period
Often refers to the REM (Rapid Eye Movement) phase of sleep where vivid dreams are most likely to occur.
Dream Period
Also known as REM (Rapid Eye Movement) sleep, a stage of sleep characterized by vivid dreams and physiological changes.
REM Sleep
A stage of sleep characterized by random movement of the eyes, low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.
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