Trigonometric Function Grapher

Instructions: Use this Trigonometric Function Grapher to obtain the graph of any trigonometric function and different parameters like period, frequency, amplitude, phase shift and vertical shift when applicable:

Trigonometric Function \(f(x)\) (Ex. 'sin(pi*x)', 'cot(2x)', etc) =

Domain Lower Limit (Optional. Ex. 1, 2/3, etc) =
Domain Upper Limit (Optional. Ex. 1, 2/3, etc) =

Trigonometric Function Grapher

Trigonometric functions have the property that they repeat their behavior. This is, they are periodic. Mathematically, that means that there is a number \(P\) with the property that

\[f(x+P) = f(x)\]

for all values of \(x\). That number \(P\) is called the period . All this is saying is that the behavior of the function repeats itself every \(P\) units in the x-axis.

Example of periodic functions

For example, for the case of the sine function, \(f(x) = \sin x\), the graph is shown below:

Example of a periodic function

You can see that the behavior of the function repeats itself. Indeed, you can take any interval of length \(2\pi\) and the next interval of length \(2\pi\) will be identical to the previous one, in terms of the shape of the function.

Why does this happen? Because \(\sin(x + 2\pi) = \sin(x)\), for all \(x\), and then the function is periodic.

What can I graph with this Trigonometric Function plotter?

You can plot any trigonometric function. You will see that periodic functions can be made to be more complex by compounding them with other algebraic expressions.

For example, what is the behavior of the function \(f(x) = 3\sin(2x+1)-4\) Well, it is even periodic? Yes, you bet. The behavior of the function \(f(x) = 3\sin(2x+1)-4\) is in all ways similar to that of the function \(f(x) = \sin x\).

This trigonometric function grapher will help you find the graph and the specific characteristics (period, frequency, amplitude, phase shift and vertical shift) of more complex trigonometric functions, such as \(f(x) = 3\cos(\pi(x-2)+3)-\frac{\pi}{4}\)

This grapher only deals with trigonometric functions. In order to graph other functions , you can use our general function plotter , which will take any function, not only trigonometric ones.

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