Re: Best syntax for derivative
- To: mathgroup at smc.vnet.net
- Subject: [mg96440] Re: Best syntax for derivative
- From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
- Date: Fri, 13 Feb 2009 03:47:04 -0500 (EST)
- References: <gn11tc$8e0$1@smc.vnet.net>
Aaron, I'd suggest f[x_, y_, z_] := Sin[x*y*z] g[x_, y_, z_] := Derivative[0, 1, 0][f][x, y, z] If you like, you can improve the looks of it by selecting Derivative [0, 1, 0][f] and converting it to StandardForm Cheers -- Sjoerd On Feb 12, 1:41 pm, Aaron Fude <aaronf... at gmail.com> 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