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## Re: Derivative function

 From: A S Hodel Subject: Re: Derivative function Date: Wed, 19 Feb 2003 08:42:39 -0600

```Symbolic derivatives, no, e.g.,

y = derivative('sin(x)','x');  (derivative of sin(x) with respect to x)

```
is not available in Octave. Someone wrote to this list recently (in the last week or so) about
```using macsyma for symbolic work.

Numerical derivatives:
t = (vector of values)
y = sin(t);

dydt = diff(y) ./ diff(t)

can be done.

On Wednesday, February 19, 2003, at 08:37 AM, Ricardo Cervera wrote:

```
```        Hello.

I wanted to know if it is possible to get the derivative function of a
function given, using Octave. I mean, something like:

function y = f(x)
y = sin(x);
endfunction

And what I am looking for is f'(x), for example cos(x).

Thanks a lot.

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```
A. S. Hodel, Assoc. Prof, Dept. Elect & Comp Eng, Auburn University, AL 36849-5201 (334) 844-1854 200 Broun Hall address@hidden http://www.eng.auburn.edu/~scotte
```

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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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```