#Linear Algebra - Eigenvectors and vector space

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winged glenBOT
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smoky verge
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You have $x_1$ which is free and $x_2 = 0$, so $\forall v \in E_1, v = (\alpha,0), \alpha \in R$. That means $E_1 = Vect( (1,0) )$. Is what you asked for ?

stray eagleBOT
lavish jewel
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I am more or less trying to figure out

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what I did wrong because I was told in my feedback sections aside from the red markings

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that the problem isn't correct but it didnt specify why its wrong as in if i did the steps procedure wrong or something else like calculation

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For the eignenvectors spanning, you now need to see if the set of eignvectors you found
S={(1,0), (1,-2)} spans R^2

lavish jewel
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i know but at the same time i dont know what i did wrong for me to merit this feedback

smoky verge
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Show that they are non collinear

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But I don't know why he wants you to say this.

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Because you did all this to do the matrix diagonalization.

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Ohhh I see maybe

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Wasn't necessary to say that S spans R^2 in my university, but it's interesting

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It makes you thinking about what you are trying to do. You want to find such a basis for using the properties of the eigenvalues.

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So your professor wants to be sure that you didn't lost any vector of your basis when you apply this matrix. In other words that the 2 vectors spans R^2

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How do you translate back and forth between coordinate systems that use different basis vectors?
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A visual understanding of eigenvectors, eigenvalues, and the usefulness of an eigenbasis.
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Those videos could help you to understand.