Sharp EL9900C EL-9900C - Page 63

Chapter 4: Basic Graphing Features - Basic Keyboard = : = : Note: The expression can be represented as a graph. The expression cannot be drawn as a graph. • Move the cursor pointer to the "=" sign and press E to change between to-draw and not-to-draw. To switch the window back to the calculation screen, simply press the # key. G: Note: Draws a full-screen graph based on the equation(s) entered in the Graph Equation window. To cancel the graph drawing, press O. If no equations are entered in the Graph equation window, only the vertical (Y) and horizontal (X) axis will be displayed upon pressing the G key. T: Displays the graph values in a table. The default sample increment value of the graph's X axis is "1". Z: Displays the ZOOM menu. Within the ZOOM menu, various preferences can be set for the graph appearance on zooming in/ out . The menu items with each function and the sub-menu items are described below: A ZOOM There are a myriad of tools under this menu item, by which the graph can be zoomed in/out in various styles. Press "A" within the ZOOM menu to select this menu item. Note: 1 Auto According to the WINDOW setup, the graph will be zoomed in by adjusting the "Ymin" (the minimum Y value) and "Ymax" (the maximum Y value) according to the "Xmin" (the minimum X value) and "Xmax" (the maximum X value). When this item is selected, the graph will automatically be redrawn. The "Auto" sub-menu item is directly affected by how the WINDOW items are set up. Refer to the W key section in this chapter to learn how to set up the Xmin and Xmax items. 53