uTo delete a function

1. While the graph relation list is on the display, press f or c to move the highlighting to the area that contains the function you want to delete.

2. Press 2(DELETE) or D.

3. Press 1(Yes) to delete the function or 6(No) to abort the procedure without deleting anything.

Using the above procedure to delete one line of a parametric function (such as Xt2) also will delete the applicable paired line (Yt2, in the case of Xt2).

kSelecting Functions for GraphinguTo specify the draw/non-draw status of a graph

1. On the graph relation list, use f and c to highlight the relation you do not want to graph.

2. Press 1(SELECT).

Each press of 1(SELECT) toggles graphing on and off. 3. Press 6(DRAW).

Example

To select the following functions for drawing:

 

Y1 = 2x2 – 5, r2 = 5 sin3θ

 

 

Use the following V-Window settings.

 

Xmin = –5,

Xmax = 5,

Xscale = 1

 

Ymin = –5,Ymax = 5,

Yscale = 1

 

Tθmin = 0,Tθmax = π,Tθptch = 2π / 60

cf (Select a memory area that contains a function for which you want to specify non-draw.)

1(SELECT) (Specifies non-draw.)

6(DRAW) or w (Draws the graphs.)

You can use the Setup screen settings to alter the appearance of the graph screen as shown below.

Grid: On (Axes: On, Label: Off)

This setting causes dots to appear at the grid intersects on the display.

Changing the V-Window Xscale or Yscale settings to 0 while “On” is specified for the Grid setting will cause the dots to disappear from the display.

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