Operation Manual

Chapter 3: Function Graphing 82
3. Press | and ~ to scroll the available options.
Note: There is no need to press Enter to choose the menu options. The last option displayed will be
the setting.
4. Press † to go to the next setting.
The options displayed on the format screen are the settings that will be applied to the graph.
RectGC, PolarGC
RectGC (rectangular graphing coordinates) displays the cursor location as rectangular coordinates X
and Y.
PolarGC (polar graphing coordinates) displays the cursor location as polar coordinates R and q.
The
RectGC/PolarGC setting determines which variables are updated when you plot the graph, move
the free-moving cursor, or trace.
•
RectGC updates X and Y; if CoordOn format is selected, X and Y are displayed.
• PolarGC updates X, Y, R, and q; if CoordOn format is selected, R and q are displayed.
CoordOn, CoordOff
CoordOn (coordinates on) displays the cursor coordinates at the bottom of the graph. If ExprOff
format is selected, the function number is displayed in the top-right corner.
CoordOff (coordinates off) does not display the function number or coordinates.
GridOff, GridDot, GridLine
Grid points cover the viewing window in rows that correspond to the tick marks on each axis.
GridOff does not display grid points.
GridDot displays grid dots.
GridLine displays grid lines.
LabelOff, LabelOn
LabelOff and LabelOn determine whether to display labels for the axes (X and Y), if axes are set to a
color.
ExprOn, ExprOff
ExprOn and ExprOff determine whether to display the Y= expression when the trace cursor is active.
This format setting also applies to stat plots.
When
ExprOn is selected, the expression is displayed in the top-left corner of the graph screen.
When
ExprOff and CoordOn both are selected, the number in the top-right corner specifies which
function is being traced.
Displaying Graphs
Displaying a New Graph
To display the graph of the selected function or functions, press s. TRACE, ZOOM instructions, and
CALC operations display the graph automatically. As the TI-84 Plus C plots the graph, the busy indicator
is on. As the graph is plotted, X and Y are updated.
Pausing or Stopping a Graph
While plotting a graph, you can pause or stop graphing.
• Press Í to pause; then press Í to resume.
• Press É to stop; then press s to redraw.