3-7-3

Using Trace

Linking Trace to a Number Table

This section explains how you can link the movement of the trace pointer to the values in the number table used to draw the graph. This type of operation is called “linked trace”.

For information about generating a number table and performing other table operations, see “3-4 Using Table & Graph”.

Example: To link trace to a number table created by graphing y = 3logx

uClassPad Operation

(1)Display the View Window dialog box, and then configure it with the following parameters.

xmin = –5,xmax = 5,

xscale = 1

ymin = –10,

ymax = 10,

yscale = 2

(2)Display the Table Input dialog box, and then configure it with the following settings. Start: 2, End: 9, Step: 1

(3)On the Graph Editor window, input and store y = 3logx into line y1, and then tap #.

This generates a number table and displays it.(4)Tap aand then [Link].

This displays the Graph window and draws the graph, with the trace pointer located on the graph line. The coordinates of the trace pointer location will also be shown.

Tapping a cell in the y1 column causes the trace pointer to move the location of the cell’s value.

The highlighted table value corresponds to the current location of the trace pointer on the graph.

(5)You can perform the following operations while a linked trace operation is in progress.

You can move the highlighting in the number table by pressing the up and down cursor keys, or by tapping the cell you want to select. Doing so causes the trace pointer to jump to the corresponding location on the graph.

(6)To quit the linked trace operation, tap on the icon panel.

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