1.From the Main Menu, enter the GRAPH mode.

2.On the Setup screen, specify On for Derivative.

3.Draw the graph.

4.Press (TRCE), and the pointer appears at the center of the graph. The current coordinates and the derivative also appear on the display at this time.

IGraph to Table

You can use trace to read the coordinates of a graph and store them in a number table. You can also use Dual Graph to simultaneously store the graph and number table, making this an important graph analysis tool.

1.From the Main Menu, enter the GRAPH mode.

2.On the Setup screen, specify GtoT for Dual Screen.

3.Make V-Window settings.

4.Save the function and draw the graph on the main (left) screen.

5.Activate Trace. When there are multiple graphs on the display, press D and A to select the graph you want.

6.Use B and C to move the pointer and press U to store coordinates into the number table. Repeat this step to store as many values as you want.

7.Press *(CHNG) to make the number table active.

ICoordinate Rounding

This function rounds off coordinate values displayed by Trace.

1.From the Main Menu, enter the GRAPH mode.

2.Draw the graph.

3.Press (ZOOM)(E)(RND). This causes the V-Window settings to be changed automatically in accordance with the Rnd value.

4.Press (TRCE), and then use the cursor keys to move the pointer along the graph. The coordinates that now appear are rounded.

ICalculating the Root

This feature provides a number of different methods for analyzing graphs.

1.From the Main Menu, enter the GRAPH mode.

2.Draw the graphs.

3.Select the analysis function.

(G-SLV)(ROOT) ... Calculation of root

(MAX) ... Local maximum value

(MIN) ... Local minimum value

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