Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: how can one use mathematica get the approximate derivative of {x,y} data points?
Replies: 4   Last Post: Jan 15, 2012 4:51 AM

 Messages: [ Previous | Next ]
 Michael B. Heaney Posts: 16 Registered: 1/10/11
how can one use mathematica get the approximate derivative of {x,y} data points?
Posted: Jan 14, 2012 2:55 AM

Hi,

I have a set of {x,y} data points:

{{0.03512, -0.5}, {0.0351181, -0.499}, ... {-0.113972, 0.699}, {-0.115072,
0.7}}

These data points look like a function y=f(x) when plotted on the x-y axes.
However, I do not know what the function f(x) is. But I need to get the
approximate derivative df/dx, as another set of data points. How can one
use Mathematica to do this?

Thanks,

Michael

--

Date Subject Author
1/14/12 Michael B. Heaney
1/14/12 Nasser Abbasi
1/14/12 Peter Breitfeld
1/14/12 Bob Hanlon
1/15/12 cedric.fuhrer