The vector b is in the subspace spanned by the columns of A when __ has a solution. The vector c is in the row space of A when __ has a solution. True or false: If the zero vector is in the row space, the rows are dependent.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Vector Spaces
Section4.5: Basis And Dimension
Problem 66E
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The vector b is in the subspace spanned by the columns of A when __ has a solution. The vector c is in the row space of A when __ has a solution. True or false: If the zero vector is in the row space, the rows are dependent.

Expert Solution
Step 1

The definition of row space and column space of a matrix is given as follows.

A column space of matrix A is the space that is spanned by columns of A.

The row space of matrix A is the space spanned by rows of A.

Step 2

We know that, SpanA=Ax:xn.

Thus, if vector bSpanA is equivalent to asking if there exists a vector x such that Ax=b.

The vector b is in the subspace spanned by the columns of A when Ax=b has a solution.

We know that column space of A is equal to the row space of AT.

The vector c is in the row space of A when ATy=c has a solution.

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