Mathematics · Matrices
Which of the following are correct features of matrices? A. An identity matrix is a square matrix. B. An identity matrix when transposed remains an identity matrix. C. (A·B)T = AT·BT, where A and B are matrices. D. (A-1)T = (AT)-1, where A is an invertible matrix. Choose the correct answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1C and D only
- 2A and C only
- 3B and C only
- 4A, B and D only✓
Correct answer
A, B and D only
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