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OpenStudy (anonymous):
Find a ⋅ b. a = <2, 4>, b = <2, 5> @hartnn
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hartnn (hartnn):
if \(a= <x_1,y_1>\) \(b= <x_2,y_2>\) then their dot product \(a.b = <x_1x_2 +y_1y_2>\)
OpenStudy (anonymous):
so 24?
hartnn (hartnn):
thats correct! :)
OpenStudy (anonymous):
wait wont it be (4,20)? cuz its a dot product...is this calculus?
OpenStudy (anonymous):
oh wait nvm
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OpenStudy (anonymous):
thats right sorry about that
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