(adsbygoogle = window.adsbygoogle || []).push({}); signals....help needed

hi,

can anyone tell me why a discrete time signal x(n-k) where k>0 is shifted right along the X-axis(the time domain) and x(n+k) is shifted left. should'nt it be the reverse? this is for the graphical notation. but for the notation x(n)={...,0,3,2,1,0,1,2,3,0,.....}

we go left for x(n-k) and go right for x(n+k) which is past samples and future samples respectively. the graphical and short hand notations are really contradictory to me. so plzzzz help me:uhh:

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Signals help needed

**Physics Forums | Science Articles, Homework Help, Discussion**