Functions
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To access the Functions Screen, either right click on the function you wish to edit and choose Edit Properties

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Or open the Quick Entry screen and push the Functions button

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The Function Properties screen will open.

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Function Entry

Enter functions in the function section in exactly the same manner as in the Quick Entry screen EXCEPT that the domain is now separated from the function for clarity.

Domain Entry

Domain entry using either the -2 <= x < 3 format or the [-2, 3) format.

Asymptotes

FX Graph calculates vertical asymptotes using both algebraic and numerical methods. Horizontal asymptotes are calculated numerically and are not quite as reliably detected as vertical asymptotes. These check boxes allow you to turn on display of these asymptotes.

Marks

FX Graph can draw domain marks and arrows on functions. FX Draw will draw an open circle for any < or > domain and a filled circle for any <= or >= domain. It can also draw arrowheads where ever the function leaves the plane. You can turn off these marks here.

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Derivative Curves

FX Graph can draw the first and second derivative curve for any Cartesian function.

Function Curve Properties

Change the line style, weight and colour for the selected function.

Function Number


Using the Quick Entry screen, you can edit all ten functions at once. The Function Properties screen only displays the properties for one function at a time. You can look at the other functions by changing the function number. The up and down arrows allow you to cycle through the numbers or you can type the function number directly in.