This article shows how to display a graph of a function.
Lets say we want to display the graph of function
f: y = 1 / x
First type the function in the main window the same way, as if you were evaluating expressions. Write only the right side of the equation. In this case, write only
Now go to main menu and select Tools/Graph of function… You can also use the shortcut button (circled in the image above).
The graph should now be displayed.
Note that the function must always contain a changing variable called x. If the function doesn't contain a variable named x, it will be considered constant.
If the function contains other variables (f.i.:
a / x + b), you have to enter their values the same way, as if you were evaluating an expression.