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{\bf Math 325, Spring 2001}

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{\bf Assignment 4, due February 23}
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Read
Boyce and DiPrima, Sections 7.4-7.6.

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Do p.\  372 \#4-7, p.\ 381 \#1,8,11,18,25,31,33, p.\ 390 \#8,13,14.
These problems are to be done by hand except for the plots, which
you may do with Maple, with Matlab, or by hand.

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There is information about using matlab to plot trajectories
(the matlab program {\bf pplane5}) on the 
course web site under \emph{Information}.

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