82.1 Discrete-Time Signals: Time-Domain Representation Discrete-time signal may also be written as a sequence of numbers inside braces {xn}={,0.2,2.2,1.1,0.2,3.7,2.9, °· The arrow is placed under the sample at time index n=o In the above, x-1=-0.2, x 0=2.2 X1F1.1, etc.§2.1 Discrete-Time Signals: Time-Domain Representation • Discrete-time signal may also be written as a sequence of numbers inside braces: {x[n]}={…,-0.2,2.2,1.1,0.2,-3.7,2.9,…} ↑ • The arrow is placed under the sample at time index n = 0 • In the above, x[-1]= -0.2, x[0]=2.2, x[1]=1.1, etc