## Plot Graphs - FAQ

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### Which functions can I plot here?

You can use this tool to plot the graphs of functions depending on one variable. The function variable has to be x!

A polynomic function you can enter like this: 2.5*x^2+3*x-5
A gaussian distribution with standard deviation 2 looks like this: 1/(2*sqrt(2*pi))*exp(-1/2*((x-5)/2)^2)

The following functions are already pre-defined:

 `sin` sine function `cos` cosine function `tan` tangens function `asin` arcus sine function `acos` arcus cosine function `atan` arcus tangens function `sinh` hyperbolic sine function `cosh` hyperbolic cosine `tanh` hyperbolic tangens function `asinh` hyperbolic arcus sine function `acosh` hyperbolic arcus tangens function `atanh` hyperbolic arcur tangens function `log2` logarithm to the base 2 `log10` logarithm to the base 10 `log` logarithm to the base 10 `ln` logarithm to base e (2.71828...) `exp` e raised to the power of x `sqrt` square root of a value `sign` sign function -1 if x<0; 1 if x>0 `rint` round to nearest integer `abs` absolute value

The input can be done using our WYSWYG formula editor. Therefore you do not have to care about correct syntax.
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### Are there any pre-defined constants?

At the moment the following constants are pre-defined:

 `pi` 3.1415... `e` 2.7182...

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### Can I add more than one graph to my plot?

For the moment it is not possible to add more than one graph to a plot. However, this feature will be implemented soon.

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### Can I add more than one graph to my plot?

If you want to store your plot it is recommended to make a screenshot of the page. It will be possible to export your plots soon. The feature has not yet been implemented.

### How can I define the x-range I want to plot?

Just go to the section "Axis properties" at the bottom of the page to define the x-range for your graph.