Revision as of 21:18, 9 February 2009 by Kim600 (Talk | contribs)

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I think TA's solution #3.b is wrong.

I think the graph of x[n-k] is wrong.

X-axis should represent n+1, n+2, n+3, ...., n+10.

So, the answer should be

0 , n<-10 n+11, -10=<n<-1 9-n, -1=<n=<8 0, 8<n

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

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