Let A = 10-4 02-3 - 4 4 2 and b = 0 1 6 Denote the columns of A by a₁, a2, a3, and let W = Span {a₁, a₂, a3}. a. Is b in (a₁, a₂, a3}? How many vectors are in {a₁, a2, a3}? b. Is b in W? How many vectors are in W? c. Show that a, is in W. [Hint: Row operations are unnecessary.]

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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b. Is b in W? Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice.
O A. No, b is not in W since b is not equal to a₁, a2, or a3.
OB. Yes, b is in W since b = a
(Type a whole number.)
O C. Yes, b is in W since, although b is not equal to a₁, a2, or a3, it can be expressed as a linear combination of them. In particular, b =
(Simplify your answers.)
and a3.
O D. No, b is not in W since it cannot be generated by a linear combination of a₁, a₂,
( )aq + ( )az + ( )ag.
a₁
a2
Transcribed Image Text:b. Is b in W? Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice. O A. No, b is not in W since b is not equal to a₁, a2, or a3. OB. Yes, b is in W since b = a (Type a whole number.) O C. Yes, b is in W since, although b is not equal to a₁, a2, or a3, it can be expressed as a linear combination of them. In particular, b = (Simplify your answers.) and a3. O D. No, b is not in W since it cannot be generated by a linear combination of a₁, a₂, ( )aq + ( )az + ( )ag. a₁ a2
Let A =
10-4
02-3
- 4 4 2
and b =
0
1
6
Denote the columns of A by a₁, a2, a3, and let W = Span {a₁, a₂, a3}.
a. Is b in (a₁, a₂, a3}? How many vectors are in {a₁, a2, a3}?
b. Is b in W? How many vectors are in W?
c. Show that a, is in W. [Hint: Row operations are unnecessary.]
Transcribed Image Text:Let A = 10-4 02-3 - 4 4 2 and b = 0 1 6 Denote the columns of A by a₁, a2, a3, and let W = Span {a₁, a₂, a3}. a. Is b in (a₁, a₂, a3}? How many vectors are in {a₁, a2, a3}? b. Is b in W? How many vectors are in W? c. Show that a, is in W. [Hint: Row operations are unnecessary.]
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