Period FAQs

what is the period of a function

by Hattie Wisoky Published 2 years ago Updated 1 year ago
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The distance between the repetition of any function is called the period of the function. For a trigonometric function, the length of one complete cycle is called a period. For any trigonometry graph function, we can take x = 0 as the starting point.

What is the fundamental period of a function?

According to periodic function definition the fundamental period of a function can be defined as the period of the function which are of the form,

How to find 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.

What is periodic function?

Or we can say that a periodic function is a function that repeats its values after every particular interval. This is the periodic function definition.

What is the period of a trigonometric function?

The word period tells you the angular “distance” of one full cycle of the wave that is usually measured between two adjacent peaks or the troughs. For this reason, in Mathematics, you have to measure a function’s period in angle units. This is known as the period of trigonometric function.

What is the reciprocal of a period?

The reciprocal of the period of a function is equal to its frequency.

What is the difference between frequency and period?

Period is a quantity that is related to time, whereas frequency is related to the rate .

Does a function repeat after every interval?

This shows that the given function f (a) possesses the same values after the given interval value of “m”. One can also say that after every interval of “m” the given function f repeats all its values.

Step by step guide to a periodic function

A function y = f(x) is a periodic function in which there exists a positive real number P such that f(x+P) = f(x), for all x belong to real numbers. The smallest value of a positive real number P is called the fundamental period of a function.

Periods of some important periodic functions

The period of a function helps us to know the interval, after which the range of the periodic function is repeated. The domain of a periodic function f(x) includes the real number values of x, the range of a periodic function is a limited set of values within an interval.

Properties of periodic functions

The following features are useful for a deeper understanding of the concepts of periodic function:

Fundamental Period of a Function

The fundamental period of a function is the period of the function which are of the form,

How to Find the Period of a Function?

If a function repeats over at a constant period we say that is a periodic function.

Period of a Trigonometric Function

The distance between the repetition of any function is called the period of the function. For a trigonometric function, the length of one complete cycle is called a period. For any trigonometry graph function, we can take x = 0 as the starting point.

Period of a Sine Function

If we have a function f (x) = sin (xs), where s > 0, then the graph of the function makes complete cycles between 0 and 2π and each of the function have the period, p = 2π/s

Period of a Tangent Function

If we have a function f (a) = tan (as), where s > 0, then the graph of the function makes complete cycles between −π/2, 0 and π/2 and each of the function have the period of p = π/s

What is periodic function?

Periodic function is a function that repeats itself at regular intervals. The period of a function is an important characteristic of periodic functions, which helps to define a function. A periodic function y = f (x), having a period P, can be represented as f (X + P) = f (X).

How to identify a function as periodic?

A function can be identified as a periodic function if the range of the function repeats itself at regular intervals, and the function is of the form f (X + P) = F (X).

What is the period of Sinx and Cosx?

The period of Sinx and Cosx is 2π.

What is the period of tanx?

The period of Tanx is π, and the period of Tan3x is π/3.

Which axis repeats itself along the graph of a periodic function?

The graph of a periodic function is symmetric and repeats itself along the horizontal axis.

Why are Jaccobi functions elliptical?

These elliptical shapes arise because of the involvement of two variables together, such as the amplitude and speed of a moving body, or the temperature and viscosity of the substance. These functions are commonly used in the description of the motion of a pendulum.

How to find period of a function?

To find the period of f ( x) = A cos ( Bx + C) + D, we follow these steps: 1 Identify the coefficient of x as B. 2 Plug B into 2π / | B |. This is the period of the function.

What is the interval of a function?

The period of a periodic function is the interval of x -values on which the cycle of the graph that's repeated in both directions lies. Therefore, in the case of the basic cosine function, f ( x) = cos ( x ), the period is 2π.

What is the cosine function?

The cosine function is a trigonometric function that's called periodic. In mathematics, a periodic function is a function that repeats itself over and over again forever in both directions. Take a look at the basic cosine function f ( x) = cos ( x ). Periodic Cosine Function.

What does the period of a cosine function represent?

In this scenario, do you see what the period of the function would represent? The period represents one cycle of the cosine function that repeats itself over and over again. Thus, in this example, the period would represent one cycle of the spring going from its highest, or most compressed position, to its lowest, or most stretched position, and then back to its highest position. Is that what you were thinking? You're definitely getting the hang of this, pun intended!

What is the period of the function g (x) = 3cos?

We see that the period of the function g ( x) = 3cos (8 x + 1) is π / 4.

Can cosine function show up in the world?

As we can see, the cosine function and its period can show up very easily in the world around us, so it's a good idea to tuck this newly acquired knowledge into our mathematical toolboxes to be used when we need it.

Is a cosine function a periodic function?

If we look at the cosine function from x = 0 to x = 2π, we have an interval of the graph that's repeated over and over again in both directions, so we can see why the cosine function is a periodic function.

What is the term for the period of a phase shift?

Amplitude, Period, Phase Shift and Frequency. and are called Periodic Functions. The Period goes from one peak to the next (or from any point to the next matching point): The Amplitude is the height from the center line to the peak (or to the trough).

What is frequency in math?

Frequency is how often something happens per unit of time (per "1").

What is phase shift?

The Phase Shift is how far the function is shifted horizontally from the usual position.

What is it called when frequency is per second?

When frequency is per second it is called "Hertz".

How many radians are in a full rotation?

Note that we are using radians here, not degrees, and there are 2 π radians in a full rotation.

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Fundamental Period of A Function

  • The fundamental period of a function is the period of the function which are of the form, f(x+k)=f(x) f(x+k)=f(x), then k is called the period of the function and the function f is called a periodic function. Now, let us define the function h(t) on the interval [0, 2] as follows: If we extend the function h to all of R by the equation, h(t+2)=h(t) => h is periodic with period 2. The graph of t…
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How to Find The Period of A function?

  1. If a function repeats over at a constant period we say that is a periodic function.
  2. It is represented like f(x) = f(x + p), p is the real number and this is the period of the function.
  3. Period means the time interval between the two occurrences of the wave.
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Period of A Trigonometric Function

  • The distance between the repetition of any function is called the period of the function. For a trigonometric function, the length of one complete cycle is called a period. For any trigonometry graphfunction, we can take x = 0 as the starting point. In general, we have three basic trigonometric functions like sin, cos and tan functions, having -2π,...
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Period of A Sine Function

  • If we have a function f(x) = sin (xs), where s > 0, then the graph of the function makes complete cycles between 0 and 2π and each of the function have the period, p = 2π/s Now, let’s discuss some examples based on sin function: Let us discuss the graph of y = sin 2x
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Period of A Tangent Function

  • If we have a function f(a) = tan (as), where s > 0, then the graph of the function makes complete cycles between −π/2, 0 and π/2 and each of the function have the period of p = π/s
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