Casio FX-9750GII-SC User Guide - Page 135

 (TYPE)(Y=)TT AT_ AU  (DRAW)  (SKTCH)(Tang)  C~CU*1 *1 You can draw a tangent line in succession by moving the " " pointer and pressing U. 12. Function Analysis I Reading Coordinates on a Graph Line Trace lets you move a pointer along a graph and read out coordinates on the display. 1. From the Main Menu, enter the GRAPH mode. 2. Draw the graph. 3. Press (TRCE), and a pointer appears in the center of the graph.*1 4. Use B and C to move the pointer along the graph to the point at which you want to display the derivative. When there are multiple graphs on the display, press \ D and A to move between them along the x-axis of the current pointer location. 5. You can also move the pointer by pressing T to display the pop-up window, and then inputting coordinates. The pop-up window appears even when you input coordinates directly. To exit a trace operation, press (TRCE). *1 The pointer is not visible on the graph when it is located at a point outside the graph display area or when an error of no value occurs. • You can turn off display of the coordinates at the pointer location by specifying "Off" for the "Coord" item on the Setup screen. • The following shows how coordinates are displayed for each function type. Polar Coordinate Graph Parametric Graph Inequality Graph I Displaying the Derivative In addition to using Trace to display coordinates, you can also display the derivative at the current pointer location. 5-29