# Linear algebra problem

1. Oct 7, 2009

### awef33

Let V be a vector space and let T: V $$\rightarrow$$ V be a linear transformation. Suppose that n and k are positive integers.

(a) If w $$\in$$ V such that T$$^{k}$$(w)$$\neq$$0 and T$$^{k+1}$$(w)=0, must {w, T(w),...,T$$^{k}$$(w)} be linearly independent?

(b) Assuming that w $$\in$$ V such that T$$^{k}$$(w)$$\neq$$0 and T$$^{k+1}$$(w)=0. Let W be the subspace of V spanned by {w, T(w),...,T$$^{k}$$(w)}. If v is a member of V such that T$$^{n}$$(v)$$\notin$$W and T$$^{n+1}$$(v)$$\in$$W, must {w, T(w),...,T$$^{k}$$(w),v,T(v),...,T$$^{n}$$(v)} be linearly independent? Explain.

2. Oct 8, 2009

### tiny-tim

Welcome to PF!

Hi awef33! Welcome to PF!

(try using the X2 tag just above the Reply box )

Hint for (a): start a problem like this by assuming that they're not linearly independent.