achikzayf achikzayf

14-07-2017
Mathematics

contestada

Find the dot product, a • b. a = 6i + 5j, b = -5i + 4j

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danielcbailey danielcbailey

14-07-2017

If i is a normal variable: then it is -30i^2 - i*j + 20j^2

If i is the constant i, then it is 20j^2 -i*j + 30

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22-08-2020

Answer:

the answer is -10

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