NDA 2024 Mathematics question
Let be a matrix of order , be a matrix of order and be a matrix of order . Which of the following statements are correct? I. is defined and is a square matrix of order 3. II. is defined and is a square matrix of order 2. III. is not defined. Select the answer using the code given below.
Answer: (D)
Solution
A product is defined when the number of columns of the first matrix equals the number of rows of the second. I: is , and is ; correct. II: is
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