5. Let V be the vector space of all continuous functions on [1,5]; that is, V = C[1,5]. -5 Let W be the subset of V such that W = {f(x) EV: P(x)dr: a subspace of V? Determine this by answering the questions below. (a) Is f(x) = 0 € W? (b) If f(r), g(x) = W, is f(x) + g(x) = W? (c) If k € R, and f(x) = W, is kf(x) ≤ W? r)dr = 0}. Is . Is W

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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5. Let V be the vector space of all continuous functions on [1,5]; that is, V = C[1, 5].
Let W be the subset of V such that W =
{f(x) eV: P(x)dx = 0}. Is W
a subspace of V? Determine this by answering the questions below.
(a) Is f(x) = 0 € W?
(b) If f(r), g(x) = W, is f(x) + g(x) = W?
(c) If k € R, and f(x) E W, is kf(x) E W?
Transcribed Image Text:5. Let V be the vector space of all continuous functions on [1,5]; that is, V = C[1, 5]. Let W be the subset of V such that W = {f(x) eV: P(x)dx = 0}. Is W a subspace of V? Determine this by answering the questions below. (a) Is f(x) = 0 € W? (b) If f(r), g(x) = W, is f(x) + g(x) = W? (c) If k € R, and f(x) E W, is kf(x) E W?
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