If A and B are matrices of order 3 × ๐‘› and ๐‘š × 5 respectively, then find the order of matrix 5A – 3B, given that it is defined.

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Transcript

Question 4 If A and B are matrices of order 3 ร— ๐‘› and ๐‘š ร— 5 respectively, then find the order of matrix 5A โ€“ 3B, given that it is defined. The Order of matrices A and B are ๐ด_(3 ร— ๐‘›) and ๐ต_(๐‘š ร— 5) To find 5A โˆ’ 2B, The order of matrix A and B must be the same Thus, 3 ร— n = m ร— 5 Thus, n = 5 Therefore, order of (5A โˆ’ 2B) is 3 ร— 5

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.