Function Graphing 3.17
82533F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:20 PM Printed: 10/27/05 1:55
PM Page 17 of 28
When a graph is displayed, press |, ~, }, or † to move the
cursor around the graph. When you first display the graph, no
cursor is visible. When you press |, ~, }, or †, the cursor
moves from the center of the viewing window.
As you move the cursor around the graph, the coordinate values
of the cursor location are displayed at the bottom of the screen if
CoordOn format is selected. The Float/Fix decimal mode setting
determines the number of decimal digits displayed for the
coordinate values.
To display the graph with no cursor and no coordinate values,
press ‘ or Í. When you press |, ~, }, or †, the
cursor moves from the same position.
The free-moving cursor moves from pixel to pixel on the screen.
When you move the cursor to a pixel that appears to be on the
function, the cursor may be near, but not actually on, the
function. The coordinate value displayed at the bottom of the
screen actually may not be a point on the function. To move the
cursor along a function, use r (page 3.18).
The coordinate values displayed as you move the cursor
approximate actual math coordinates, *accurate to within the
width and height of the pixel. As
Xmin, Xmax, Ymin, and Ymax
get closer together (as in a ZoomIn) graphing accuracy
increases, and the coordinate values more closely approximate
the math coordinates.
Exploring Graphs with the Free-Moving Cursor
Free-Moving
Cursor
Graphing
Accuracy
Free-moving cursor “on” the curve
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