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pychu [463]
3 years ago
9

Find the dot product between the vectors u and v: u=2i+3j and v=-6i-5j

Mathematics
1 answer:
vitfil [10]3 years ago
4 0

\bf \stackrel{\textit{dot product}}{\cdot }\implies (a\cdot c)+(b\cdot d) \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} u=&2i+3j\\ v=&-6i-5j \end{cases}\implies \begin{cases} \\  \end{cases} \\\\\\ \cdot \implies (2\cdot -6)+(3\cdot -5)\implies -27

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