HP 48g Graphing Calculator - Manual (Page 294)

22
The PICTURE FCN Menu
Key Description
in the PICTURE menu):
R 0 0 T Root. Moves the cursor to a root (intersection of the
function and the r-axis) and displays the value of the
root. If the root is not in the display window, briefly
displays the message
OF-F SCREEN before displaying
the value of the root. If there are multiple roots, the
root-finder usually finds the root closest to the current
cursor location. For an equation, it searches for a root
of the expression on the right side of the equation.
Intersection. If only one function is plotted, moves the
cursor to a root (same as ROOT ). If two or more
functions are plotted, moves the cursor to the closest
intersection of two functions and displays the { x , y )
coordinates. If the closest intersection is not in the
display window, briefly displays the message
OFF
SCREEN before displaying the coordinates of the
intersection.
S L.. iJ P E Slope. Calculates and displays the slope of the function
at the r-value of the cursor, and moves the cursor to
the point on the function where the slope was
calculated.
|~| h; P H Area. Calculates and displays the area beneath the
curve between two r-values defined by the mark and
cursor. (Before you execute this operation, press to
mark one end of the x interval, then move the cursor
to the other end.)
Shade. If only one function is plotted, shades the
region between the r-values defined by the mark and
the cursor, between the function and the r-axis. If
there are two functions plotted, shades the region
between the two functions, and between the r-values
defined by the mark and the cursor.
22-10 Plotting