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Let A = `[[2,4],[3,2]]`, `B=[[1,3],[-2,5]]`And `C =[[-2,5],[3,4]]`.Find Each of the Following: B − 4c

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Question

Let A = `[[2,4],[3,2]]`, `B=[[1,3],[-2,5]]`and `c =[[-2,5],[3,4]]`.Find each of the following:  B − 4C

Sum
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Solution

`B-4C`

⇒B−4C=`[[1   3],[-2   5]]-4[[-2     5],[3     4]]`

⇒B−4C=`[[1   3],[-2   5]]-[[-8   20],[12     16]]`

⇒B−4C=`[[1+8         3-20],[-2-12       5-16]]`

⇒B−4C=`[[9           -17],[-14       -11]]`

 

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Chapter 4: Algebra of Matrices - Exercise 5.2 [Page 18]

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R.D. Sharma Mathematics Volume 1 and 2 [English] Class 12
Chapter 4 Algebra of Matrices
Exercise 5.2 | Q 2.2 | Page 18
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