The HP 9G calculator can display graphs of builtin functions as well as single variable functions.
Builtin function graphs
Graphs can be produced of the following functions:
sin

cos

tan

sin^{1}

cos^{1}

tan^{1}

sinh

cosh

tanh

sinh^{1}

cosh^{1}

tanh^{1}



x^{2}

x^{3}

log

ln

10^{x}

e^{x}

x^{1}

When generating a builtin graph, any previously generated graph is cleared. The display range is automatically set to the optimum.
Custom graphs
Graphs can be generated from your own singlevariable functions (for example, y = x^{3} + 3x^{2} 6x  8). When creating custom graphs, the display range must be set.
Press the Range key to access the range parameters for each axis for each value:

Minimum value.

Maximum value.

Scale (the distance between the marks along an axis). (See Figure 1)
Figure : Range values
After setting the range, press Graph and then enter the expression to be graphed.
See Figure 2 for an example of creating a custom graph.
Figure : Creating a custom graph