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What is equal to the product HJ?

What is equal to the product HJ?-example-1
User Cvk
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1 Answer

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You must multiply each element of first row of H and first column of J to get
a
11 = 4*7 + -2*3 + 5*8 = 28 - 6 + 40 = 62
You now multiply each element of second row of H and first column of J to get
a
21 = 6*7 + 1*3 + -3*8 = 42 + 3 - 24 = 21
User Amir Arad
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