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Evaluate the dot product of (5,7) and (-8,2)

Evaluate the dot product of (5,7) and (-8,2)
asked 189k views
4 votes
Evaluate the dot product of (5,7) and (-8,2)

asked
User Ernestina Juan
by
8.0k points

2 Answers

6 votes

Answer:

-26

Explanation:

answered
User Mirko Adari
by
8.3k points
4 votes
recall the dot-product is just <a,b> • <c,d> => a*c + b*d.

therefore here is just 5*(-8) + 7* 2, or namely -26.
answered
User Nielsj
by
8.2k points
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