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Re: Have I found a bug?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg84233] Re: Have I found a bug?
  • From: Louise Hoffman <louise.hoffman at gmail.com>
  • Date: Fri, 14 Dec 2007 14:59:45 -0500 (EST)
  • References: <fjtgdu$7hm$1@smc.vnet.net> <fjtrcu$ctd$1@smc.vnet.net>

> both are correct.
>
> To check, one must get the original function by taking the derivative of
>
>   Log[- answer]
>
> answer2= answer1 Sqrt[-1] = I answer1.
>
> Log[-answer2] = Log[- I answer1]= Log[I]+ Log[-answer1]
>
> The additional summand Log[I] is eliminated by the derivative.

Is it possible to have Mathematica to give both answers?

Thanks for the great reply =)

Hugs,
Louise


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