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3 cards from this section. Quick, good the night before a test.
What is an eigenvalue?
Recall how it relates to linear transformations.
Define an eigenspace.
Think about the vectors satisfying the eigenvalue equation.
What is the eigenspace corresponding to an eigenvalue?
Think about which elements make up the eigenspace.
True or False: The basis of an eigenspace is unique.
Consider how many different ways you could represent the same space.
Given a 2x2 matrix find the eigenvalues, determine the eigenspaces, and describe the basis of each eigenspace.
Do you remember how to find eigenvectors once the eigenvalues are known?
Consider a symmetric matrix for which you have found eigenvalues of 1, 2, and 3 with linearly independent eigenvectors. Explain how these can be used for diagonalization.
Recall the diagonalization process and why linearly independent eigenvectors matter.
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