This applet is designed to allow a visual exploration of the problem of
fitting a sin curve to given data by setting parameters.
The points "MaxPoint" and "MinPoint" can be set by dragging. You
then manipulate the parameters "a", "b", "c", and "d" with the sliders
so that the curve "f(x) = a*sin(b*(x-c))+d" has "TopPoint" equal to
"MaxPoint" and "BottomPoint" equal to "MinPoint".
To change the viewing area, right-click (control-click for mac
people) on the open space and choose "properties" from the context menu
that
pops up for "Drawing Pad". Similarly, you can type in values for
the parameters by right-clicking on points on the sliders and choosing
"redefine" in the pop=up menu.