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Find a ⋅ b. a = 9i + 5j, b = 4i + 3j
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Find a ⋅ b.

a = 9i + 5j, b = 4i + 3j

User Kc Bickey
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2 Answers

4 votes
it would be 5i x -2j
User Jonah
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3 votes
I hope this helps you




(9i+5j)(4i+3j)



9i.4i+9i.3j+5j.4i+5j.3j


36i^2+27ij+20ij+15j^2


36i^2+47ij+15j^2
User Halfred
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