Question

помогитеи решить 3 задачу.

Answer 1

x = 2*cos(50*π*t)
v(t) = x(t)' = (2*cos(50*π*t))' = - 2*50*π*sin(50*π*t)
v(t) = -100*π*sin(50*π*t)
vmax = 100*π м/с