This applet provides students with multiple opportunities to determine the values of the parameters [color=#b20ea8]"a"[/color] & [color=#0a971e]"d"[/color] as the view a graph of the function of the form [color=#1551b5][b]y = a cos(x) + d[/b][/color].
When students enter correct input values for [color=#b20ea8]"a"[/color] & [color=#0a971e]"d"[/color], the applet tells them so.
[i][color=#c51414]Students (and teachers) can quickly regenerate as many practice opportunities as needed[/color][/i].
For practice in determine values of [b]"a"[/b] & [b]"d"[/b] from viewing the graph of [color=#0a971e][b]y = a sin(x) + d[/b][/color], go to http://tube.geogebra.org/m/1537267