Solve the Problem $y = \sin 2 \pi l t + \sin 2 \pi h t$

question 65

Multiple Choice

Solve the problem.
-The sound produced by touching each button on a touch-tone phone is described by $y = \sin 2 \pi l t + \sin 2 \pi h t$
where $l$ and $h$ are the low and high frequencies (cycles per second) in the figure shown.


Touch-Tone phone
Describe the sound emitted by touching the 0 key as a product of sines and cosines.

• A) \(\mathrm { y } = 2 \sin ( 2277 \pi \mathrm { t } ) \cos ( 395 \pi \mathrm { t } )\)
• B) \(\mathrm { y } = 2 \sin ( 2418 \pi \mathrm { t } ) \cos ( 536 \pi \mathrm { t } )\)
• C) \(\mathrm { y } = 2 \sin ( 395 \pi \mathrm { t } ) \cos ( 2277 \pi \mathrm { t } )\)
• D) \(\mathrm { y } = 2 \sin ( 536 \pi \mathrm { t } ) \cos ( 2418 \pi \mathrm { t } )\)

Identify appropriate nursing responses and parental guidance for various pediatric developmental stages and challenges.

Understand the impact of familial, societal, and environmental factors on child development and health.

Recognize the signs and implications of common pediatric health issues, including developmental delays and syndromes.

Apply knowledge of developmental theories (Erikson, Piaget, Freud) to nursing practice and education.

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