π(π₯)=β1.5πππ (2π₯βπ/ 3)+0.5.
Midline of the cos funtion is USUALLY y = 0
this cos fxn is shited UP 0.5
y = 0.5
the minus 1.5 flips it around the x axis and enlarges it by 1.5
the - pi/3 is a phase shift
