HP 39gII User Manual page 131

Plot the
expression
Explore the
graph
Display the
numeric view
Parametric app
6. Plot the expression.
P
7. Plot a triangle instead of a circle.
SP
\
120
\\
\
Select Fixed-Step Segments
A triangle is displayed rather than a circle (without
changing the equation) because the changed value
of TSTEP ensures that points being plotted are 120°
apart instead of nearly continuous, and selecting
Fixed-Step Segments connects the points 120°
apart with line segments.
You are able to explore the graph using the trace,
zoom, split screen, and scaling functionality available
in the Function app.
8. Display the Numeric view.
M
9. With a t-value selected, type in a replacement value,
and see the table jump to that value. You can also
zoom in or zoom out on any t-value in the table. You
are able to explore the table using the zoom, build
P
121