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djverab [1.8K]
3 years ago
13

HELP FAST PLEASE Find u*v, if u=13j and v=i+3j

Mathematics
1 answer:
Flauer [41]3 years ago
6 0
\bf \begin{cases}
u=13j\implies 0i+13j\implies \ \textless \ 0,13\ \textgreater \ \\
v=i+3j\implies 1i+3j\implies \ \textless \ 1,3\ \textgreater \ 
\end{cases}
\\\\\\
\ \textless \ 0,13\ \textgreater \ \cdot \ \textless \ 1,3\ \textgreater \ \implies (0\cdot 1)+(13\cdot 3)\implies 39
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