(Solved): signals
a) \( 1 f \cdot x(n)=2 \delta(n+1)+3 \delta(n)+28(n-1)-4 \delta(n-3) \), find the following ...
signals
a) \( 1 f \cdot x(n)=2 \delta(n+1)+3 \delta(n)+28(n-1)-4 \delta(n-3) \), find the following i) Sketch \( x(n) \) and find its energy ii) sketch \( 2 x(2 n-1) \) Sketch the signal \( y(n)=2^{-1} \) rect \( (n / 3) \) and find its energy.