Special notes – HP 48g Graphing Calculator User Manual

Page 313

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between two plotted points. The default step-size for

is an interval equal to 1 pixel.

When checked, the step-size is interpreted to represent

pixels. When unchecked (default) the step-size is

interpreted to represent units.
See the Function plot type.

See the Function plot type.
See the Function plot type.

Special Notes

■ For conic plots, the HP 48 actually plots the two branches of

the conic section separately. This may introduce one or two

discontinuities

in the connected

graph. Specifying

smaller

step size

(decreasing the interval between plotted points) helps eliminate

visual discontinuities.

m If flag -1 (Principal Values) is set, the Conic plot will only display

its principal branch (half of the plot). Clear flag -1 and redraw to
plot the entire conic section.

■ Equations that

are

higher than second-order in the

independent

or dependent variable are converted to their second-order Taylor

approximations before being plotted.

■ Conic is a useful plot type for plotting systems of equations

involving two variables where none of the equations are higher than
second order in either variable (see Example 2 in “Truth Plots" for

a sample application).

Example:

Display the conic example plot. ELLIP:

-f 3j/“ — 18 = 0. If necessary, type in IdEFlCH to install

the

EXAMPLES