Enter T or F depending on whether the statement is true or false. Assume that matrices in the following statements are all square and of the same size.   1. Every diagonal matrix is invertible.   2. The inverse of an invertible diagonal matrix is a diagonal matrix.   3. The inverse of an invertible upper triangular matrix is an upper triangular matrix.   4. The inverse of an invertible symmetric matrix is a symmetric matrix.   5. The inverse of an invertible lower triangular matrix is a lower triangular matrix.   6. Every upper triangular matrix can be row reduced to the identity matrix as its RREF.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.5: Determinants
Problem 90E
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Enter T or F depending on whether the statement is true or false. Assume that matrices in the following statements are all square and of the same size.

  1. Every diagonal matrix is invertible.
  2. The inverse of an invertible diagonal matrix is a diagonal matrix.
  3. The inverse of an invertible upper triangular matrix is an upper triangular matrix.
  4. The inverse of an invertible symmetric matrix is a symmetric matrix.
  5. The inverse of an invertible lower triangular matrix is a lower triangular matrix.
  6. Every upper triangular matrix can be row reduced to the identity matrix as its RREF.

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