Solution Found!
(a) Let U D fp 2 P4.F/ W p.6/ D 0g. Find a basis of U.(b) Extend the basis in part (a)
Chapter 2, Problem 4(choose chapter or problem)
(a) Let \(U=\left\{p \in \mathcal{P}_{4}(\mathbf{F}): p(6)=0\right\}\). Find a basis of \(U\).
(b) Extend the basis in part (a) to a basis of \(\mathcal{P}_{4}(\mathbf{F})\).
(c) Find a subspace W of \(\mathcal{P}_{4}(\mathbf{F})\) such that \(\mathcal{P}_{4}(\mathbf{F})=U \oplus W\).
Questions & Answers
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QUESTION:
(a) Let \(U=\left\{p \in \mathcal{P}_{4}(\mathbf{F}): p(6)=0\right\}\). Find a basis of \(U\).
(b) Extend the basis in part (a) to a basis of \(\mathcal{P}_{4}(\mathbf{F})\).
(c) Find a subspace W of \(\mathcal{P}_{4}(\mathbf{F})\) such that \(\mathcal{P}_{4}(\mathbf{F})=U \oplus W\).
ANSWER:Step 1 of 7
a)
Let be such that . Then, by the result quoted above, where .
On the other hand, if , then and 6 is a root of .
This establishes one-one correspondence between such that and the polynomials .
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