# Difference between revisions of "HW4 Prob 4a Formula Correction"

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The formula in the book for problem 4a can be written another way. It can be replaced with:

$y_{k}=CA^{k}x_{0}+\sum _{{i=0}}^{{k-1}}CA^{i}Bu_{{k-1-i}}+Du_{k}$

--Julia Braman 08:19, 23 October 2007 (PDT)