A point moves along the x axis according to the law x = a sin2 (wt /4). Find: (a) The amplitude and period el

A point moves along the x axis according to the law x = a sin2 (wt – π/4). Find:
(a) The amplitude and period el oscillations; draw the plot x (t);
(b) The velocity projection vx as a function of the coordinate x; draw the plot vx (x).