Math Problem Statement

Write a sine function that has a midline of y, equals 3y = 3, an amplitude of 2, a period of start fraction 2, divided by 7, and an end fraction 7 2 ​ and a horizontal shift of start fraction, 1, divided by the end fraction, 14. 14 1 ​ to the right.

Solution

To write a sine function that satisfies the given conditions, let's break down each component:

  1. Midline: The midline is y=3y = 3. This implies that the vertical shift DD is 3.
  2. Amplitude: The amplitude AA is 2.
  3. Period: The period PP is 72\frac{7}{2}. The formula to find the coefficient BB in the sine function is B=2πPeriodB = \frac{2\pi}{\text{Period}}.
  4. Horizontal Shift: The horizontal shift is 114\frac{1}{14} to the right. This implies C=114C = \frac{1}{14}.

Now, let's use the general form of a sine function:

y=Asin(B(xC))+Dy = A \sin(B(x - C)) + D

Step 1: Find the value of BB

B=2πPeriod=2π72=2π×27=4π7B = \frac{2\pi}{\text{Period}} = \frac{2\pi}{\frac{7}{2}} = \frac{2\pi \times 2}{7} = \frac{4\pi}{7}

Step 2: Substitute the values into the sine function

y=2sin(4π7(x114))+3y = 2 \sin\left(\frac{4\pi}{7}\left(x - \frac{1}{14}\right)\right) + 3

Final Sine Function

The sine function that meets all the specified conditions is:

y=2sin(4π7(x114))+3y = 2 \sin\left(\frac{4\pi}{7}\left(x - \frac{1}{14}\right)\right) + 3

Would you like more details or have any questions?

Related Questions:

  1. How would the function change if the amplitude were 3 instead of 2?
  2. What would be the function if the period were 74\frac{7}{4} instead of 72\frac{7}{2}?
  3. How would the graph of the function look after applying the horizontal shift?
  4. Can you rewrite the function in cosine form?
  5. What is the effect of the horizontal shift on the phase of the sine function?

Tip: To verify the characteristics of a sine function, it's useful to plot the function and visually confirm the amplitude, period, and shifts.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Sine Function

Formulas

Sine function: y = A * sin(B(x - C)) + D

Theorems

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Suitable Grade Level

Advanced High School