MathGroup Archive 1995

[Date Index] [Thread Index] [Author Index]

Search the Archive

differentiate multivariable InterpolatingFunction?


I am using Mathematica 2.2.  It is possible to differentiate an
InterpolatingFunction of 1 variable, e.g. if u is an
InterpolatingFunction defined from 0 to 10, then I can ask for u'[3]
or define v[x_] = D[u[x],x] or whatever.

If u is an InterpolatingFunction of 2 variables, is it possible, using
D or Derivative or something built-in, to get a numerical value for
the partial derivative of u with respect to it first argument at a
specific point?  I have tried several plausible forms of syntax (and
no doubt several implausible ones as well), but no luck.

Thanks in advance for any suggestions; an authoritative "it can't be
done" would also be helpful so I can stop trying.

-- 
Brian R. Hunt
bhunt at ipst.umd.edu


  • Prev by Date: random-grid lists: Plotting
  • Next by Date: Re: Sinh, Cosh and all that
  • Previous by thread: differentiate multivariable InterpolatingFunction?
  • Next by thread: Re: differentiate multivariable InterpolatingFunction?