Use Theorem 5.2.1 to determine which of the following are subspaces of p3. 3. (a) all polynomials an +ajx +a2x2 + a3x for which .3 3D0 (b) all polynomials an +ajx + azx + a3x for which ao +a1 +a2+ az =0 .2 .3 (c) all polynomials an +ajx + azx? + azx for which ag, a1, a2, and az are integers (d) all polynomials of the form +ajx, where and a1 are real numbers

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.1: Vector Spaces And Subspaces
Problem 44EQ
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Use Theorem 5.2.1 to determine which of the following are subspaces of p3.
3.
.2
(a) all polynomials a0 + ajx + azx + a3x3 for which
a0 =0
(b) all polynomials
a0 +a1x + a2x+ a3x³ for which
a0 +a1+ az +az=0
(c) all polynomials an +ajx + azx² + azx³ for which ag,a1, a2, and az are integers
(d) all polynomials of the form ao + a1x,
where
and
aj are real numbers
Transcribed Image Text:Use Theorem 5.2.1 to determine which of the following are subspaces of p3. 3. .2 (a) all polynomials a0 + ajx + azx + a3x3 for which a0 =0 (b) all polynomials a0 +a1x + a2x+ a3x³ for which a0 +a1+ az +az=0 (c) all polynomials an +ajx + azx² + azx³ for which ag,a1, a2, and az are integers (d) all polynomials of the form ao + a1x, where and aj are real numbers
THEOREM 5.2.1
If W is a set of one or more vectors from a vector space V, then W is a subspace of V if and only if the following
conditions hold.
(a) If u and v are vectors in W, then u v is in W.
(b) If k is any scalar and u is any vector in W, then ku is in W.
Transcribed Image Text:THEOREM 5.2.1 If W is a set of one or more vectors from a vector space V, then W is a subspace of V if and only if the following conditions hold. (a) If u and v are vectors in W, then u v is in W. (b) If k is any scalar and u is any vector in W, then ku is in W.
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