Math Problem Statement

Determine the equation of the sine function shown in the graph.

Solution

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the1. key ** featuresAmplitude of** the: function
:

The Step amplitude is1 the: distance Identify from the the amplitude mid

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absolute2 value of. the Period:
maximum The sine function completes deviation one from full the centerline ((y cycle = between (x = -0\pi)): $$A =) 3 and (x = $$

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3 From. the graph, the sine wave ** starts at (xVertical Shift =** :0
\ ), returns to The the same graph point oscill (atescom sympleting one cycle) atmetr x=2πx = 2\pi. Thus: [ ically aroundT y==0y = = 0,2\ sopi there\ is no]

vertical shift.

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is : The[ graphT starts = at \ (frac{x2 =\ pi}{0B} )\ with] thewhere sine curveBinvertedcurveB inverted ( is thegoing frequency. downward Sol),ving which for suggestsBaphasesuggestsB a phase: shift\ and[ reflectionB over = the \frac x{-axis2.\

pi}{ThusT,} the = equation \ isfrac: {\2[ y =\ -\sin(x) pi}{2\pi]

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to### Step 3: Determine the clarify phase shift any partThe of graph this has explanation no!
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  1. What (x changes in the equation if = the amplitude were 0\2) instead when of (1y? =2 . How do0 you\ determine)), the so phase shift the phase of a sine function shift ((? 3C.)) is: C=0WhatisC = 0 What is

the Step 4 equation: Determine the vertical shift of

The sine wave the oscillates symmetrically cosine around the function that ( matchesx this\ graph)-axis ((? y = 04)), so. How does adding a the vertical shift affect vertical the graph of the sine function? shift5 (DD) is. Can we rewrite the: equation in terms\ of[ (Dy = = a \0cos(bx \ + c) +]

Step d5)?

:** CombineTip the** information: into The the sine general function sine's equation properties (Theam generalplitude, form of period, the phase sine shift function, is and: vertical\ shift[ )y are = easy A to verify \ ifsin you(B identifyx the - mid Cline) and + peaks D! ] Substituting the values A=3A = 3, B=1B = 1, C=0C = 0, and D=0D = 0, we get: y=3sin(x)y = 3\sin(x)

Final Answer:

The equation of the sine function is: y=3sin(x)y = 3\sin(x)


Do you want a detailed explanation of any specific part? Let me know!


Here are 5 follow-up questions related to sine functions:

  1. What happens to the graph if the amplitude is doubled?
  2. How do you find the phase shift if the graph starts at a different xx-coordinate?
  3. What is the effect of adding a vertical shift to the sine function?
  4. How does changing the frequency (BB) alter the period of the graph?
  5. What would the equation look like if this graph was a cosine function instead?

Tip: Always analyze the amplitude, period, and shifts separately to easily identify the sine or cosine function's equation.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Sine Functions
Amplitude
Period
Phase Shift
Vertical Shift

Formulas

General sine function: y = A * sin(Bx - C) + D
Amplitude: A = maximum deviation from the centerline
Period: T = 2π / B
Phase shift: C / B
Vertical shift: D = centerline of the wave

Theorems

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Suitable Grade Level

Grades 9-11