[Scilab-users] {EXT} Antwort: Re: [EXTERNAL] Problem with solving this elegantly

[Dang Ngoc Chan, Christophe]

Hello,

> De : Pascal Buehler
> Envoyé : mardi 27 février 2018 11:20
>
> Now for lambda1, insert the number to the matrix, where sigmaxx =-1, sigmayy =5 and tauxy=4 already known is, as a stress tensor
> you will get two linear equation like
>
> -8*v1x+4*v1y=0
> 4*v1x-2*v1y=0
>
> normaly an trivial solution, but non of the sovers gave me the correct answer?

A=[-8 4 ; 4 -2]

b = [0 ; 0]

[x0, kerA] = linsolve(A, b)
 kerA  =

   0.4472136
   0.8944272

 x0  =

   0.
   0.

You notice that kerA(2)/kerA(1) = 2 which means that the result is similar to

kerA  =

   1
   2

 x0  =

   0.
   0.

Which is the excepted solution. Or?

--
Christophe Dang Ngoc Chan
Mechanical calculation engineer
This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.