x1(t) = 0 - 3u(-4-t) u(-3-t) - 2u(-2-t) 3u(-1-t) - 2u(t-1) u(t-2) - u(t-3)
(a) Determine the amplitude of the function.
(b) Identify the step functions within the expression.
(c) Calculate the integral of the function.
(d) Find the time instances where the function transitions.