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matlab eignvector AND eigenvalue problem

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irfan_uet

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hELLO.

I am using matlab [v,e]=eig(ww);
its returning expected values as required.
But matlab is returning unexpected eignvector(taking unexpected values and relation is true) I do not know how these values are coming or i do not know the function.

E.g.

if W=[2 1;1 2];
>> W=[2 1;1 2];
>> [Eignvector,Eignvalues]=eig(W)

Eignvector =

-0.7071 0.7071
0.7071 0.7071


Eignvalues =

1 0
0 3


When I calculate eignvector
for eignvalue=3 x=-y;
for eignvalue=1 x=y;


you can see the relation is true (x=y,x=-y) but matlab is taking 0.707 as input to show the eignvector. Why matlab taking 0.707 as input?How this calculated?

If u have any link or book plz tell me. Because I have to know this for my project.
 

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