Period FAQs

how to find the period and amplitude of a function

by Prof. Charlene Hayes Published 2 years ago Updated 1 year ago
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Amplitude is the distance between the center line of the function and the top or bottom of the function and the period is the distance between two peaks of the graph or the distance it takes for the entire graph to repeat. Using this equation: Amplitude =APeriod =2πBHorizontal shift to the left =CVertical shift =D.

Part of a video titled Finding the Period and Amplitude of a Sine Function - YouTube
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To get the amplitude we'll have to take the absolute. Value of negative 1/2 which will simply giveMoreTo get the amplitude we'll have to take the absolute. Value of negative 1/2 which will simply give us positive 1/2. So this function has a period equal to 8 and an amplitude equal to positive 1/2.

Full Answer

How to determine amplitude, period?

  • Amplitude—maximum displacement from the equilibrium position of an object oscillating around such equilibrium position
  • Frequency—number of events per unit of time
  • Period—time it takes to complete one oscillation

How to find amplitude and period?

Find Amplitude, Period, and Phase Shift y=csc (x) y = csc(x) y = csc (x) Use the form acsc(bx−c)+ d a csc (b x - c) + d to find the variables used to find the amplitude, period, phase shift, and vertical shift.

What is the amplitude, period, and midline of the function?

We know that the standard functions (f(t) = sin(t)) and (g(t) = cos(t)) are circular functions that each have midline (y = 0text{,}) amplitude (a = 1text{,}) period (p = 2pitext{,}) and range ([-1,1]text{.}) Our work in Preview Activity 2.4.1suggests the following general principles.

How do you calculate the period of a function?

Steps for Finding the Period

  1. Rewrite your function in standard form if needed. The first step you need to take is to make sure that your function is written in standard form: The ...
  2. Label your A, B, C, and D values. After rewriting your function in standard form if needed, now you can label your A, B, C, and D values. ...
  3. Calculate your period.

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How do you find an amplitude of a function?

The Amplitude is the height from the center line to the peak (or to the trough). Or we can measure the height from highest to lowest points and divide that by 2. The Phase Shift is how far the function is shifted horizontally from the usual position.

How do I find the period of a function?

We can always calculate the period using the formula derived from the basic sine and cosine equations. The period for function y = A sin (B a – c) and y = A cos ( B a – c ) is equal to 2πB radians. The reciprocal of the period of a function is equal to its frequency.

How do you write the amplitude and period of an equation?

1:393:43Write the equation of Sine or Cosine Given Amplitude and PeriodYouTubeStart of suggested clipEnd of suggested clipYou're going to go 2 pi divide it by 4 pi. And that gives you 1/2. So your Omega here is 1/2. AndMoreYou're going to go 2 pi divide it by 4 pi. And that gives you 1/2. So your Omega here is 1/2. And then you just write the X so there's your equation.

What is the amplitude of a function?

Explanation: The amplitude of a function is the amount by which the graph of the function travels above and below its midline. When graphing a sine function, the value of the amplitude is equivalent to the value of the coefficient of the sine.

What is the formula to find the period of a wave?

The formula for period is T = 1 / f , where "T" is period – the time it takes for one cycle to complete, and "f" is frequency. To get period from frequency, first convert frequency from Hertz to 1/s. Now divide 1 by the frequency.

How do you find a period of a function from a graph?

2:524:57Midline, amplitude and period of a function | Khan Academy - YouTubeYouTubeStart of suggested clipEnd of suggested clipWell here our Y is decreasing. As x increases our slope is positive here our slope is negative here.MoreWell here our Y is decreasing. As x increases our slope is positive here our slope is negative here. So this isn't the same point on the cycle. We need to get to the point where Y.

How do you find the period of a function without graphing?

The period is defined as the length of one wave of the function. In this case, one full wave is 180 degrees or radians. You can figure this out without looking at a graph by dividing with the frequency, which in this case, is 2.

What is a period and amplitude in math?

Amplitude is the distance between the center line of the function and the top or bottom of the function, and the period is the distance between two peaks of the graph, or the distance it takes for the entire graph to repeat.

Where is the amplitude and period?

The height of the hill or the depth of the valley is called the amplitude, and is equal to . Any one full pattern in the graph is called a cycle, and the length of an interval over which a cycle occurs is called the period.

What is a period in maths?

When a number is written in standard form, each group of digits separated by a comma is called a period . The number 5,913,603,800 has four periods. Each period is shown by a different color in the place value chart. The period name is written above each period.

Why is the period 2pi B?

It means the period is 12, so each cycle is 12 units long. What you say is sort of right: b is the number of cycles per 2pi.

How do you write an equation with amplitude period and phase shift?

Finding the amplitude, period, and phase shift of a function of the form A × sin(Bx - C) + D or A × cos(Bx - C) + D goes as follows: The amplitude is equal to A ; The period is equal to 2π / B ; and. The phase shift is equal to C / B .

How do you write a period with amplitude and cosine?

1 AnswerIn y=acos(b(x−c))+d :• |a| is the amplitude. • 2πb is the period. ... The amplitude is 3 , so a=3 .The period is 2π3 , so we solve for b .b=3.The phase shift is +π9 , so c=π9 .The vertical transformation is +4 , so d=4 .∴ The equation is y=3cos(3(x−π9))+4 , which can be written as y=3cos(3x−π3)+4.

Why is the period 2pi B?

It means the period is 12, so each cycle is 12 units long. What you say is sort of right: b is the number of cycles per 2pi.

What is the amplitude and period of a wave?

Amplitude—distance between the resting position and the maximum displacement of the wave. Frequency—number of waves passing by a specific point per second. Period—time it takes for one wave cycle to complete.

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