The slider for [i]D[/i] can be used to explore the impact of the parameters [i]D[/i] on the graph of a function of the form [i]g[/i]([i]t[/i]) = sin([i]t[/i]) + [i]D[/i] or [i]g[/i]([i]t[/i]) = cos([i]t[/i]) + [i]D[/i].
The red graph is the graph of [i]y[/i] = sin([i]t[/i]) or [i]y[/i] = cos([i]t[/i]) and remains fixed.
The black graph is the graph of [i]y[/i] = sin([i]t[/i]) + [i]D[/i] or [i]y[/i] = cos([i]t[/i]) + [i]D[/i] and will change as the value of [i]D[/i] is changed.
