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Re: NSolve fails where Solve succeeds!

  • To: mathgroup at
  • Subject: [mg43478] Re: NSolve fails where Solve succeeds!
  • From: Jens-Peer Kuska <kuska at>
  • Date: Thu, 18 Sep 2003 05:38:40 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <bk9jer$t8t$>
  • Reply-to: kuska at
  • Sender: owner-wri-mathgroup at


you say that the matrix {{a,b}

should be equal to a scalar 0 and you wonder
why Mathematica dont' like it ...

I wonder why Solve[] gives a solution at all
and *this* seems to be the bug. You mean

NSolve[Flatten[Thread  /@ Thread[{{a, b}, {c, d}} == 0]]]

you you should tell Mathematica *what* you mean.


Pavel Pokorny wrote:
>   Dear Mathematica friends
>    Solve[{{a,b},{c,d}}==0]
> gives the correct solution in Mathematica 5.0 while
>    NSolve[{{a,b},{c,d}}==0]
> fails.
> Is it a bug or an intention?
> It would be nice to have Solve and NSolve giving
> as close results as possible.
> --
> Pavel Pokorny
> Math Dept, Prague Institute of Chemical Technology

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