Let A be an m × n matrix ( where m < n ) whose rank is r . (a) What is the largest value r can be? (b) How many vectors are in a basis for the row space of A ? (c) How many vectors are in a basis for the column space of A ? (d) Which vector space R k has the row space as a subspace? (e) Which vector space R k has the column space as a subspace?
Let A be an m × n matrix ( where m < n ) whose rank is r . (a) What is the largest value r can be? (b) How many vectors are in a basis for the row space of A ? (c) How many vectors are in a basis for the column space of A ? (d) Which vector space R k has the row space as a subspace? (e) Which vector space R k has the column space as a subspace?
Solution Summary: The author explains how the largest value r can be for mtimes n matrix A.
Let
A
be an
m
×
n
matrix ( where
m
<
n
) whose rank is
r
.
(a) What is the largest value
r
can be?
(b) How many vectors are in a basis for the row space of
A
?
(c) How many vectors are in a basis for the column space of
A
?
(d) Which vector space
R
k
has the row space as a subspace?
(e) Which vector space
R
k
has the column space as a subspace?
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
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