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