Suppose that row 1 of A is multiplied by a non-zero number c to obtain B, and so: а. and B Show that every row in the set S1 = {*1,72, ...,7n} is a linear combination of the rows in the set S2 {$1,72, ...,7n}, where 3 = c •ř1, and vice versa. %3D b. Now, prove in general that if the rows of A are {1, 72, ...,Ti, ...,Tn} and the rows of B are {71,72, ..., 3i, combination of the rows of B, and vice-versa. ..., 7n}, where 3; = c •Fi, then every row of A is a linear Suppose we exchange any two rows of A to produce B. Show that the rows of B are the same as the rows of A, just in a different order, and use this to show that each row of A is a linear combination of the rows of B, and vice-versa. с.

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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2.3 #4

The question is in the pictures

Please answer a, b and c

Proof of Theorem 2.3.1: The goal of this Exercise is to prove that if B is obtained from A
using a single row operation, then rowspace(A) = rowspace(B). We must show that
every row in B is a linear combination of the rows of A, and every row in A is a linear
combination of the rows of B.
4.
Transcribed Image Text:Proof of Theorem 2.3.1: The goal of this Exercise is to prove that if B is obtained from A using a single row operation, then rowspace(A) = rowspace(B). We must show that every row in B is a linear combination of the rows of A, and every row in A is a linear combination of the rows of B. 4.
Suppose that row 1 of A is multiplied by a non-zero number c to obtain B, and so:
а.
T2
А
and B
I'n
{71,72, ...,Tn} is a linear combination of the
Show that every row in the set S1
rows in the set S2 = {31,72, ....,n}, where 3 = c•71, and vice versa.
b. Now, prove in general that if the rows of A are {71,72, ...,7¡,
of B are {71,72,
combination of the rows of B, and vice-versa.
in} and the rows
..., Si, ..., rn}, where s; = c•ři, then every row of A is a linear
....
C •
Suppose we exchange any two rows of A to produce B. Show that the rows of B are
the same as the rows of A, just in a different order, and use this to show that each
row of A is a linear combination of the rows of B, and vice-versa.
с.
Transcribed Image Text:Suppose that row 1 of A is multiplied by a non-zero number c to obtain B, and so: а. T2 А and B I'n {71,72, ...,Tn} is a linear combination of the Show that every row in the set S1 rows in the set S2 = {31,72, ....,n}, where 3 = c•71, and vice versa. b. Now, prove in general that if the rows of A are {71,72, ...,7¡, of B are {71,72, combination of the rows of B, and vice-versa. in} and the rows ..., Si, ..., rn}, where s; = c•ři, then every row of A is a linear .... C • Suppose we exchange any two rows of A to produce B. Show that the rows of B are the same as the rows of A, just in a different order, and use this to show that each row of A is a linear combination of the rows of B, and vice-versa. с.
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