Help with question 4

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Help with question 4

-
1. For a vector space V and a finite set of vectors S
definitions for
a) span(S)
(61
(1)
b) a basis for V
c) a subspace of V
(2) koga yba nielupes
2. Let V R³. Show that V with the given operations for and is not a vector
space. Clearly explain what goes wrong in terms of at least one of the axioms for
vector spaces.
stealbi
and
=
30
a) Verify that e₁
=
]
X1
is a basis for V = R³.
Yı
Z1
X1
8- -1
Yı
(c)x₁
(2c)y₁
(3c) z₁
21
(Hint: The addition is standard. Examine axiom 10 in the definition of a vector space)
3. Let
W:
{[₁] :* + P² <1}
be a subset of V=R2 with the standard addition and scalar multiplication.
[3],
[8]
b) Compute e₁ + e2, and show that it is NOT in W.
c) Explain why W is NOT then a subspace of V.
4. Explain why the set
yd bud
X2
Y/2
and e₂ =
Z2
{V₁, Vn} in V, copy down the
;
B =
x1 + x₂
Yı₁ + y2
21 +22]
are in W.
H
5
--(8-8-8)
0
0
(+) tacita
up Bolinti
Transcribed Image Text:- 1. For a vector space V and a finite set of vectors S definitions for a) span(S) (61 (1) b) a basis for V c) a subspace of V (2) koga yba nielupes 2. Let V R³. Show that V with the given operations for and is not a vector space. Clearly explain what goes wrong in terms of at least one of the axioms for vector spaces. stealbi and = 30 a) Verify that e₁ = ] X1 is a basis for V = R³. Yı Z1 X1 8- -1 Yı (c)x₁ (2c)y₁ (3c) z₁ 21 (Hint: The addition is standard. Examine axiom 10 in the definition of a vector space) 3. Let W: {[₁] :* + P² <1} be a subset of V=R2 with the standard addition and scalar multiplication. [3], [8] b) Compute e₁ + e2, and show that it is NOT in W. c) Explain why W is NOT then a subspace of V. 4. Explain why the set yd bud X2 Y/2 and e₂ = Z2 {V₁, Vn} in V, copy down the ; B = x1 + x₂ Yı₁ + y2 21 +22] are in W. H 5 --(8-8-8) 0 0 (+) tacita up Bolinti
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