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OpenStudy (anonymous):
Find a • b. a = 4i + 8j, b = -2i + 3j
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OpenStudy (anonymous):
@Venny Can you help me out bud?
jimthompson5910 (jim_thompson5910):
To find the dot product, you multiply the corresponding components. Then you add up the products.
OpenStudy (anonymous):
Oh that's easy. So it's <-8, 24>
jimthompson5910 (jim_thompson5910):
you got the products -8 and 24 now you add them up: -8+24 = 16, which is the final result of the dot product
OpenStudy (anonymous):
ahhh cool :) thanks.
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jimthompson5910 (jim_thompson5910):
np
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