20-2 11 0. 0 0 20-2 0 0 0 Q1 Let A = 1 a) Is A invertible? Justify your answer. b) Find a basis for Col(A) and Null(A)? c) For V Col(A) find a basis for the orthogonal complement of V? %3D d) For V = Col(A) write down the matrix P representing the (orthogonal) projection onto V? e) Find the eigenvalues together with the corresponding eigenspaces. f) If it is possible decompose A as SDS- where D is a diagonal matrix.
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please answer d,e and f. thank you!
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