Energy and Power signals. Determine whether the following signals are power signals,
energy signals, or neither. Justify your answer.
(a) x(t)=e^(-at)[u(t)-u(t-2)],a>0x(t)=tsin(t)u(t),-infty x(t)=cos^(2)(t)u(t),-infty
(b) x(t)=e^(-at)[u(t)-u(t-2)],a>0
(c) x(t)=tsin(t)u(t),-infty
1. Energy and Power signals. Determine whether the following signals are power signals. energy signals, or neither. Justify your answer.
(a) x(t)= cos2(t)u(t),-oo< t< oo (b) x(t)= e-at[u(t)-u(t- 2)],a> 0 (c) x(t)= tsin(t)u(t),-oo< t< oo