Can I control filter command?

2020 5 30
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Assuming I have a function an equation like
y[n]=x[n]-y[n-1] with the condition that y[n]=0 if n<0
can I implement and solve this using filter command? or should I solve it in another way?

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per isakson
per isakson 2020-5-30
编辑：per isakson 2020-5-30

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Yes, filter() is possible. Try
y = filter( 1, [1,1], x );

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Mohamed Salah
Mohamed Salah 2020-5-30
I was trying the same line of code but with vaiables a,b and it didn't produce the correct values, but somehow the line did solve the problem. Thanks!

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