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How to introduce a Functional with the results with Solve command?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg89284] How to introduce a Functional with the results with Solve command?
  • From: Kaibin Fu <kaibinfu at gmail.com>
  • Date: Tue, 3 Jun 2008 06:46:04 -0400 (EDT)

I get the expression of urm which is a function of rom. 

sol3=Solve[sol2 == 0, urm];
sol4[rom_] = sol3[[1]][[1]][[2]];

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.


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