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Mathematics 21 Online
OpenStudy (anonymous):

Last question for the day! @hartnn Evaluate the expression: v ⋅ w Given the vectors: r = <8, 1, -6>; v = <6, 7, -3>; w = <-7, 5, 2>

hartnn (hartnn):

\(v.w = <x_1x_2 +y_1y_2 +z_1z_2>\)

OpenStudy (anonymous):

so what is the r there for?

hartnn (hartnn):

maybe nxt few questions are related to same info.

OpenStudy (anonymous):

so i got -13 as my answer

OpenStudy (anonymous):

is that correct?

hartnn (hartnn):

YES! :)

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