Question: x 1 [ n ] = 7 [ n + D 1 ] - 3 [ n + D 2 ] + 6 [ n

x1[n]=7[n+D1]-3[n+D2]+6[n-D3]+6[n-D4]
x2[n]=7u[n+D1]-3u[n+D2]+6u[n-D3]+6u[n-D4]
x3(t)=7u(t+D1)-3u(t+D2)+6u(t-D3)+6u(t-D4)
x4(t)=D1et[u(t)-u(t-5)]
x5(n)=D1en[u(n)-u(n-5)]
Where D1=4, D2=5, D3=1, D4=6
Sketch
x 1 [ n ] = 7 [ n + D 1 ] - 3 [ n + D 2 ] + 6 [ n

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