Reference no: EM132435799
Task 1:
If p(T) = Tn- αn-1 Tn-1- αn-2 Tn-2- .........- α0∈K[T] is a polynomial
Then this matrix is the companion matrix of p:
Show that:
1) For the characteristics polynomial XA(T) of p applies XA(T) = (-λ)np(T).
2) if λ is the roof of p(t), so is (λ, λ, .... λn-1)T the eigenvector of A to the eigen value λ.
3) The polynomial p(t) has different roots λ1.... λn ∈ k.
Define a matrix S, so that S-1AS a diagonal matrix is
Task 2:
If V is a n- dimensional vectorspace and f:V→V be a diagonalizable endomorphism.
Show that : If E ⊆ V is a f- invariant vector subspace (which means if f(x) ∈ E for all x ∈ E applies, then the restriction of f|E is diagonalizable.
Tip 1: Create a basis x1.......xk, yk+1,......yn of V so that E = L (x1......,xk) is and yk+1,.....yn eigenvectors of f are.
Tip 2: If W = L(yk+1, ..... yn) so is V = E⊕W, then write fitting vectored y1,... yk as ui + ωi and show that ui is linear independent.
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