Consider the vector space P3 of polynomials of degree at most 3 together with the zero polynomial.. Define an inner product on P3 as follows: for p(x), q(x) E P3, (p, q) = p(0)q(0) +p(1)q(1) + p(-1)q(-1) +p(2)q(2). (a) Let W be a subspace of P3 with basis {x, x², x³}. Use the Gram-Schmidt process to convert {x, x², x³} into an orthogonal basis. (b) Using the orthogonal basis obtained in (a), find the projection of p(x) = 1 – x onto W.

Elementary Linear Algebra (MindTap Course List)
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Chapter4: Vector Spaces
Section4.CR: Review Exercises
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Consider the vector space P3 of polynomials of degree at most 3 together
with the zero polynomial.. Define an inner product on P3 as follows: for p(x), q(x) E
P3,
(p, q) = p(0)q(0) + p(1)q(1) + p(-1)q(-1)+p(2)q(2).
(a) Let W be a subspace of P3 with basis {x, x², x³}. Use the Gram-Schmidt process
to convert {x, x², x³} into an orthogonal basis.
(b) Using the orthogonal basis obtained in (a), find the projection of p(x) =1– x
onto W.
Transcribed Image Text:Consider the vector space P3 of polynomials of degree at most 3 together with the zero polynomial.. Define an inner product on P3 as follows: for p(x), q(x) E P3, (p, q) = p(0)q(0) + p(1)q(1) + p(-1)q(-1)+p(2)q(2). (a) Let W be a subspace of P3 with basis {x, x², x³}. Use the Gram-Schmidt process to convert {x, x², x³} into an orthogonal basis. (b) Using the orthogonal basis obtained in (a), find the projection of p(x) =1– x onto W.
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