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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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the noob

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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

the noob on 18 Jun 2013

finally managed to do it, thank you guys :)

Walter Roberson
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

the noob on 18 Jun 2013

finally managed to do it, thank you guys :)

Azzi Abdelmalek

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