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Answer to Question #42435 in Analytic Geometry for shasha
Question #42435
Find the indicated dot product.
r = <9, -7, -8>, v = <3, 4, 7>, w = <6, -9, 7>
v ⋅ w
help me please
r = <9, -7, -8>, v = <3, 4, 7>, w = <6, -9, 7>
v ⋅ w
help me please
Expert's answer
Dot product v ⋅ w=3*6+4*(-9)+7*7=18-36+49=18+13=31 (it is calculated as the sum of the products of the corresponding entries of the two sequences of numbers).
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