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Re: How to introduce a Functional with the results with Solve command?
You are much more likely to obtain an actual working answer if you post an actual working example. What is sol2? What is urm? -- David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ "Kaibin Fu" <kaibinfu at gmail.com> wrote in message news:g22tpq$il1$1 at smc.vnet.net... >I get the expression of urm which is a function of rom. > > sol3=Solve[sol2 == 0, urm]; > sol4[rom_] = sol3[][][]; > Because rom is a function of x1, I want to take the derivative of the > following functional with respect of x1. > sol5[x1_]=3*rom -sol4[rom] > How should I do it? > If convenient, please send an email to > kaibinfu at gmail.com > thanks. >