graph the function y=1/2sin(x-pi/4)
\(y=\frac{1}{2}sin(x-\frac{\pi}{4})\\\\y=\frac{1}{2}sin(x)\\\\\Downarrow T_{\vec{a}=[\frac{\pi}{4};\ 0]}\\\\y=\frac{1}{2}sin(x-\frac{\pi}{4})\)
