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the noob
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deriving fractions in matlab

Asked by the noob
on 18 Jun 2013

hi, is it possible to derive a fraction? for example: (s+2)/(s^2+7)

thanks.

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2 Answers

Answer by Walter Roberson
on 18 Jun 2013
 Accepted answer

You can use the symbolic toolbox. If you need to do it more "by hand" then use the chain rule.

  1 Comment

finally managed to do it, thank you guys :)


Answer by Azzi Abdelmalek
on 18 Jun 2013

You can also use an approximate derivation of your function:

s=0:0.01:100;
y=(s+2)./(s.^2+7);
dy=diff(y)./diff(s)
plot(s(1:end-1),dy)

  1 Comment

finally managed to do it, thank you guys :)


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