Math Problem Statement

What is the amplitude, period, vertical shift and phase shift

What is the amplitude, period, vertical shift and phase shift for y = sin(x + π/10)?

Solution

The function given is:

y=sin(x+π10)y = \sin\left(x + \frac{\pi}{10}\right)

We can now find the amplitude, period, vertical shift, and phase shift of the function:

  1. Amplitude:
    The amplitude of a sine function y=sin(bx+c)y = \sin(bx + c) is given by the coefficient of the sine function. Since there is no coefficient in front of the sine function here, the amplitude is 1.

  2. Period:
    The period of a sine function is determined by the formula:

    Period=2πb\text{Period} = \frac{2\pi}{|b|}

    In this case, b=1b = 1 (since the function is sin(x+π10)\sin(x + \frac{\pi}{10})), so the period is:

    Period=2π1=2π\text{Period} = \frac{2\pi}{1} = 2\pi

  3. Vertical Shift:
    The vertical shift occurs when there is an added constant outside the sine function. Since there is no constant added outside, the vertical shift is 0.

  4. Phase Shift:
    The phase shift is determined by the horizontal translation of the sine wave and is calculated using:

    Phase Shift=cb\text{Phase Shift} = \frac{-c}{b}

    Here, c=π10c = \frac{\pi}{10} and b=1b = 1, so the phase shift is:

    Phase Shift=π101=π10\text{Phase Shift} = \frac{-\frac{\pi}{10}}{1} = -\frac{\pi}{10}

    Therefore, the graph is shifted to the left by π10\frac{\pi}{10}.

Summary:

  • Amplitude: 1
  • Period: 2π2\pi
  • Vertical Shift: 0
  • Phase Shift: π10-\frac{\pi}{10} (left by π10\frac{\pi}{10})

Would you like further details on any part of this explanation?


Here are five related questions:

  1. How does a coefficient in front of the sine function affect its amplitude?
  2. How would the period change if the function was y=sin(2x+π10)y = \sin(2x + \frac{\pi}{10})?
  3. What happens to the graph if we introduce a vertical shift?
  4. How would you graph the function using the phase shift information?
  5. What effect would multiplying the sine function by a negative value have on its graph?

Tip: To find the phase shift, always check the sign inside the parentheses with xx for proper direction of shift.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Trigonometry
Graphing Trigonometric Functions

Formulas

Amplitude of y = a * sin(bx + c) is |a|
Period of y = a * sin(bx + c) is 2π / |b|
Phase Shift of y = a * sin(bx + c) is -c / b
Vertical Shift is determined by a constant outside the sine function

Theorems

Properties of Sine Function
Transformation of Trigonometric Functions

Suitable Grade Level

Grades 10-12