04 Horizontal Scaling

Instructions

Move the slider for a in the applet and answer the following questions based on your observations.

How do we obtain the graph of y = sin(2x) from the graph of y = sin(x)?

How do we obtain the graph of y = sin(½x) from the graph of y = sin(x)?

The equation y = sin(ax) can be seen as replacing the variable x in the equation y = sin(x) by the variable _____.

Select all that apply

If f(x) is a trigonometric function, then changing the value of a in the equation y = f(ax) changes the _____________ of the curve.