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Re: Best syntax for derivative

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96406] Re: Best syntax for derivative
  • From: dh <dh at metrohm.com>
  • Date: Fri, 13 Feb 2009 03:40:50 -0500 (EST)
  • References: <gn11tc$8e0$1@smc.vnet.net>


Hi Aaron,

the partial differential operator is: Derivative. In your case qwe would 

wrote:

g=Derivative[0,1,0][f]



hope this helps, Daniel



Aaron Fude wrote:





> Hi,

> 

> Suppose I have a function of three variables

> 

> f[x_, y_, z_]:=Sin[x y z]

> 

> And I want to construct g[x, y, z] which is the partial derivative of f

> [] with respect to y. I do

> 

> f[x_, y_, z_] := Sin[x y z]

> g[x_, y_, z_] := D[f[x, temp, z], temp] /. temp -> y

> 

> but I'm sure there is something better. Something along the lines of

> 

> g = Partial[f, 2]

> 

> Many thanks in advance.

> 

> Aaron

> 




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