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SMK Teknologi dan Rekayasa

Soal 46 Operasi Vektor


Jika\ vektor\ \bar{p}=2\bar{i}+3\bar{j}\ dan\ \bar{q}=4\bar{i}-3\bar{j}+\bar{k},\ maka\ nilai\ 2\bar{p}+4\bar{q}\ adalah\ ....\\a.\ \ 20\bar{i}+6\bar{j}-4\bar{k}\ \ \ \ \ \ \ \ \ \ b.\ \ 20\bar{i}-6\bar{j}+4\bar{k}\ \ \ \ \ \ \ \ \ \ c.\ \ 16\bar{i}+6\bar{j}+2\bar{k}\\d.\ \ 16\bar{i}-6\bar{j}+2\bar{k}\ \ \ \ \ \ \ \ \ \ e.\ \ 16\bar{i}-6\bar{j}-2\bar{k}
Jawaban: b

\frac{\begin{matrix} \ 2\bar{p}=4\bar{i}+6\bar{j}+0\bar{k}\\ \ \ \ \ 4\bar{q}=16\bar{i}-12\bar{j}+4\bar{k} \end{matrix}}{}\ +\\2\bar{p}+4\bar{q}=20\bar{i}-6\bar{j}+4\bar{k}

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