? ? ? Are the following statements true or false? 1. The linear system Ax = b will have a solution for all b in R" as long as the columns of the matrix A do not include the zero column. 2. If A and B are square matrices satisfying det (A) = 0 and det (B) = 0, then A + B cannot be invertible. 3. Performing elementary column operations on the augmented matrix of a linear system does not change the solution set.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.2: Guassian Elimination And Matrix Methods
Problem 93E
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Are the following statements true or false?
1. The linear system Ax = b will have a solution for all b in R" as long as the columns of the matrix A do not include the zero column.
2. If A and B are square matrices satisfying det (A) = 0 and det(B) = 0, then A + B cannot be invertible.
3. Performing elementary column operations on the augmented matrix of a linear system does not change the solution set.
4. If A is an invertible upper triangular matrix, then A-¹ is lower triangular.
5. The linear system Ax = b will have a solution for all b in R" as long as the columns of the matrix A span R"
Transcribed Image Text:? ? ? ? ? Are the following statements true or false? 1. The linear system Ax = b will have a solution for all b in R" as long as the columns of the matrix A do not include the zero column. 2. If A and B are square matrices satisfying det (A) = 0 and det(B) = 0, then A + B cannot be invertible. 3. Performing elementary column operations on the augmented matrix of a linear system does not change the solution set. 4. If A is an invertible upper triangular matrix, then A-¹ is lower triangular. 5. The linear system Ax = b will have a solution for all b in R" as long as the columns of the matrix A span R"
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