Use the slider to change the value of \(a\).
- What do you notice?
- What questions do you have?
Decide which of the following is the gradient function of \(\sin 3x\) and justify your answer.
- \(\cos 3x\)
- \(3\cos x\)
- \(3\cos 3x\)
It may be useful to use the GeoGebra applet or graph sketching to help you explain.
