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Asked by LeBron
on 10 Apr 2013

Hey everyone heres the question: http://img42.imageshack.us/img42/3236/capturezih.jpg I cant seem to get the plots to work

Heres my matlab code

w=0:0.001:pi; Hw=(0.1*(exp(1j*w)-1))/(exp(1j*w)+0.8); figure (1) subplot (2,1,1) plot(w,abs(Hw)) subplot (2,1,2) plot(w,angle(Hw))

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Answer by Teja Muppirala
on 10 Apr 2013

You need to do elementwise division, use "./" instead of "/"

Hw=(0.1*(exp(1j*w)-1))./(exp(1j*w)+0.8);

LeBron
on 10 Apr 2013

thx for replying that worked.

One more question related to the same question: http://img23.imageshack.us/img23/7905/capturelc.jpg

if true n=1:5:100; x=cos(15*pi*2/16)+ 2; figure (2) subplot(2,1,1) stem(n,x) ylabel('x(n)') y=filter([ subplot(2,1,2) stem(n,y) ylabel('y(n)') xlabel('n') end

just not sure what to use in yfilter part. thx

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