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Re: Why not expected result for Inverse[] ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg40544] Re: [mg40533] Why not expected result for Inverse[] ?
  • From: "Y.A.Tesiram" <yas at pcomm.hfi.unimelb.edu.au>
  • Date: Wed, 9 Apr 2003 20:28:01 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Pretty hard to understand why if you have defined z. Inverse[%] operates
on the output of the previous calculation. Unless you have explicitly
stated that

z = k - w^2*m,

then z has no value and Inverse[z] is exactly that, Inverse[z].

Yas



On Wed, 9 Apr 2003 twm145 at psu.edu wrote:

> I define two 2X2 square matrices, m & k
> Then define a z matrix, [k]-w^2*[m]
>
> Why does Inverse[z], not give inverse, just gives output as   Inverse[z]
>
> instead I have to use Inverse[%]
>
> Does'nt make sense to me. Help me understand please.
>
> Tom
>
>



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