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S*S'-> make a code program of DIFF (S) for S to excute expression:S*S, ( S=vector, S'=dS/dt). ideas to all?

hello everyone,
now i need a help of ideas for a program style from all to find :S*S'.
here we would not be able to use directly Diff( S) cuz of error of unsame size of S & diff( S).
soo i dlove to get any code PROGRAM STYLEs for function S' ( dS/dt) to Find S*S', with S: vector, for example as a  begining input:
t=0:10;
S=2*t.^3 +3*t;
Now make a code program to DEFINE S' by ALGORITHM of MATH.
 dear all, my question going well for understanding??
iam waiting for all.
( hey, give a trial into the world of Math of Algorithm for function & diveritative)-)
0
4/19/2012 7:08:23 AM
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Web resources about - S*S'-> make a code program of DIFF (S) for S to excute expression:S*S, ( S=vector, S'=dS/dt). ideas to all? - comp.soft-sys.matlab

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