Incorrect. The values of this function range from $\displaystyle-{3}\usepackage{cmbright}\Huge\$ to 3, and the cosine graph has not been reflected over the x-axis. Use these facts to determine the value of a. Two cycles are shown over the interval $\displaystyle{\left[{0},{2}\pi\right]}\usepackage{cmbright}\Huge\$ . Use this fact to determine the value of b.