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Re: Different cases in Solve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg89600] Re: [mg89575] Different cases in Solve
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Sat, 14 Jun 2008 05:30:20 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

Use Reduce

Reduce[a * x == b, x]

(b == 0 && a == 0) || (a != 0 && x == b/a)


Bob Hanlon

---- Aaron Fude <aaronfude at gmail.com> wrote: 
> Hi,
> 
> When one does Solve[a x == b, x], one gets {{x -> b/a}}. How does one
> get Mathematica to give you different solutions depending on cases: b/
> a if a nonzero, any number if a==b==0, and no solutions if a=0 and b
> is nonzero?
> 
> Many thanks in advance!
> 
> Aaron
> 



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