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Eigenvalues with complex roots?

Ok I’m trying to solve a 2×2 matrix for it’s eigenvalue. and the root I’m working is complex. This question is actually geared more toward complex numbers. In an example while creating my eigen basis I found myself with these two complex system of equations:

(2-2i)x -2 y = 0

4x – (2+2i)y = 0

So now the solution to this system of equations is :

(1-i)x – y =0

Pleaseee tell me why this is the solution! Like exactly what the reasoning is. I think it has to do with properties of complex numbers. Please help pleaseeee!

Top 1 Answers
Anonymous

Favorite Answer

assume x=a+ib and y=c+id, a b c d are reals.

Now put it in the two given equations and equate the real and imaginary parts. you will get 4 equations in a b c and d but these equations will be dependent on each other. solve for c and d in terms of a and b frm these equations and find the value of c+id=y….in terms of a abd b. u will get the required ans…:)

hope it helps

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