The impulse response of a system is h(t) = t u(t). For an

The impulse response of a system is h(t) = t u(t). For an input u(t – 1), the output is

u(t - 1) →	(t - 1)²	u(t - 1)
	2

	t²	u(t)
	2

	t(t - 1)	u(t - 1)
	2

	(t² - 1)	u(t - 1)
	2