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For the graph of a circular function y = f(x) , determine whether f(-x) = f(x) or f(-x) = -f(x) is true.
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Sleep Terrors
A sleep disorder causing feelings of panic or dread typically occurring during the first hours of stage 3–4 non-rapid eye movement (NREM) sleep and lasting for 1 to 10 minutes.
Obstructive Sleep Apnea/Hypopnea Syndrome
A sleep disorder characterized by repeated episodes of partial or complete blockage of the airway during sleep.
Upper-Airway Blockage
A medical emergency where the airways are obstructed, leading to reduced or complete stoppage of airflow.
Insomnia
A sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing restorative sleep.
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