Inverse of a Function
How to Use this Applet
The Graphs
The sliders change the parameters c and d in the function y = af( bx ).
 The black graph is the graph of the function.
 The red graph is the graph of the inverse of the function.
The Slider Area
The sliders change the parameters a, b, h and k in the function y = af[ b( x  h )] + k.
 Drag a slider to change the value of a parameter.
 The <LEFT> and <RIGHT> arrow keys can be used to change the selected parameter [light blue].
 The <UP> and <DOWN> arrow keys can be used to increase or decrease the selected parameter. (Use this feature for fine adjustments.)
 If the arrow keys don't respond, click the cursor in the applet frame then try again.
 Drag a parameter scale to "move" it. (ie. Change the range but maintain the scale "length".)
 Drag towards or away from a parameter thumb to "rescale" the scale.
 Select the corresponding parameter button to enter a value for a parameter.
The Graph Area
 Drag the filled blue location to move the graph of the function (and thus change parameters h and k).
 Drag a location along the graph of the function vertically to stretch the graph vertically about the line y = k (and thus change parameter a).
 Drag a location along the graph of the function horizontally to stretch the graph horizontally about the line x = h (and thus change parameter b).
 Drag the empty black location to move the reference location along the graph of the function.
 Drag the filled red location to move the reference location along the graph of the inverse of the function.
 The <SHIFT> key: Click and drag in the graph area to move the entire coordinate system.
 The <CTRL> key: Click and drag in the graph area towards or away from the origin to change the scales on both axes.
Other
 Use the "SET FUNCTION" button to select a different basic function and restore the applet to the initial state.
