
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Transcribed Image Text:triples of real numbers yl
those that are not vector spaces, determine which
properties of a vector space fail to hold.
a) (x1, y1, Z1) + (x2, y2, Z2) =
(x1 + x2, y1 + y2, Z1 + z2),
c(x, y, z) = (cx, y, cz)
b) (x1, yı, Z1) + (x2, Y2, Z2) =
(Zi + 2, yı + y2, X1 +x2),
с(х, у, г) %3D (сх, су, сг)
c) (x1, yı, Z1) + (x2, Y2, 22) =
(x + x2, y1 + y2 - 2, z1 + z2),
c(x, y, z) = (cx, y, z)
5. Show that the set of ordered pairs of positive real
numbers is a vector space under the addition and
scalar multiplication
If not, why n
8. Let S denote
numbers
addition and
%3D
Σ
n=1
If not, why ne
9. Let V be a se
fine addition
(x1, yı)+(x2, y2) = (x1X2, Y1Y2), c(x, y) = (x, y^).
6. Does the set of complex numbers under the addition
and scalar multiplication
Show that V
is called a zer
(a + bi) + (c + di) = (a + c) + (b + d)i,
10. Prove part (2)
c(a + bi) = ca + cbi
11. Prove that if c
where a, b, c, and d are real numbers form a vector
space? If not, why not?
7. Let C denote the set of all convergent sequences of
real numbers {an}. Is C a vector space under the
vector space
or v = 0.
12. Show that subt
on a vector sp=
2.2 SUBSPACES AND SPANNING SETS
We begin this section with subspaces. Roughly sp
vector space sitting within a larger vector space.
precisely.
DEFINITION
A subset W of a vector space

Transcribed Image Text:10. Prove part (2) of Theorem 2.2.
9. Let V be a set consisting of a single element z.
8. Let S denote the set of all convergent series of re
{an} + {bn} = {an + bn}, c{an} = {ca,?
addition and scalar multiplication
r the indi-
f ordered
асе. For
ne which
If not, why not?
numbers n=i an. Is S a vector space under
addition and scalar multiplication
00
Ean + bn = (an + b.).
n=1
n=1
n=1
00
2an = ca,?
C
n=1
n=1
ive real
ion and
If not, why not?
fine addition and scalar multiplication on V
=*, y°).
z+z = z,
ddition
is called a zero vector space.
)i,
vector
or v = 0.
aces of
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