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M3-036-A11-V04
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F-TF.5
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M3-036-A11-V04
Choose trig functions to model periodic phenomena using amplitude, frequency, and midline.
Compare sinusoidal models with parallel feature fields
Problem
Compare model \(P\), whose maximum is \(11\) and minimum is \(-3\), with \(Q(x)~=~7\sin(x)~+~4\). State the amplitude, midline, range, period, and phase information justified for each, then explain whether equal extrema prove identical graphs.
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A
P has amplitude 7, midline -3, and range [-10, 4], with period and phase undetermined. Q has amplitude 7, midline 4, range [-3, 11], period 2pi, and phase 0. The graphs differ because their midlines and ranges do not match.
B
P has amplitude 14, midline 4, and range [-3, 11], but its period and phase are undetermined. Q has amplitude 7, midline 4, range [-3, 11], period 2pi, and phase 0. The graphs differ because P has twice the amplitude.
C
P has amplitude 7, midline 4, and range [-3, 11], but its period and phase are undetermined. Q has amplitude 7, midline 4, range [-3, 11], period 2pi, and phase 0. Equal extrema alone do not prove identical graphs.
D
P has amplitude 7, midline 4, range [-3, 11], period 2pi, and phase 0. Q has the same amplitude, midline, range, period, and phase, so the graphs must be identical.
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Curriculum context
Standard F-TF.5
Category Functions
Domain Trigonometric Functions
Objective Choose trig functions to model periodic phenomena using amplitude, frequency, and midline.
Problem type Compare sinusoidal models with parallel feature fields