In: Accounting
If A is the matrix for projecting onto a plane S in R³, then the eigenvalues of A in non- decreasing order are:

Let {e₁, e2, e3} be the standard
basis of R3
Let:

and





Hence, it is clear:
If A is the matrix for projecting onto a plane S in R³, then the eigenvalues of A in non- decreasing order are:

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If A is the matrix for projecting onto a plane S in R³, then the eigenvalues of A in non- decreasing order are:
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