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

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Last updated at Oct. 26, 2020 by Teachoo

Transcript

Question 4 If A and B are matrices of order 3 ร ๐ and ๐ 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 ๐ด_(3 ร ๐) and ๐ต_(๐ ร 5) To find 5A โ 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 โ 2B) is 3 ร 5

CBSE Class 12 Sample Paper for 2021 Boards

Question 1 (Choice 1)

Question 1 (Choice 2) Important

Question 2

Question 3 (Choice 1) Important

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Question 4 You are here

Question 5 โ Choice 1

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Question 6 Important

Question 7 (Choice 1)

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Question 9 (Choice 1) Important

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Question 20 (Choice 1)

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Question 21

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Question 23 (Choice 1)

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Question 24

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Question 28 (Choice 1)

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Question 29

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Question 31 (Choice 1)

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Question 33

Question 34 (Choice 1)

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Question 35

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Class 12

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.