Grace+H

Shower Curtain: Cosine

Equation: f(x)=2cos(x) Domain: all real numbers Range: [-2,2] Discontinuities: none Symmetry: Even f(6)= 2cos(6) =1.920 f(-6)=2cos(-6) =1.920 End Behavior: oscillates between 2 and -2 as x approaches infinity and negative infinity