Zooming And Sketching - Casio CFX-9850GB PLUS Getting Started

Zooming and Sketching

Once you have drawn a particular function, by pressing SHIFT F2 you will activate
the Zoom option. This allows the user to zoom in or out from a particular point on the
function by a given or specified factor. It will also allow the user to zoom in on a
specific part of the graph, for example a root or point of intersection.
Again, once a function has been drawn, you can activate the Sketch option by
pressing SHIFT F4. Using this option allows us to sketch tangents, normals, inverse
functions, draw a circle with a specified radius, sketch vertical and horizontal lines
and more!
Absolute Value Graphs
To draw an absolute value function first press OPTN
followed by NUM (F5) then Abs (F1). If there is more than
one term in the function to be sketched, make sure that
brackets are used after the Abs notation.
Inequalities
From the text screen in the GRAPH mode, press TYPE (F3) then the continuation
key (F6) and the options for sketching inequalities will appear on the screen. Press
Y> (F1) and note the change at the top of the screen. Enter the equations as shown
below, draw and observe the region satisfied by the two inequalities.