Contoh Soal: Latihan Soal Matematika Kelas 12

Soal Dan Pembahasan Matematika Kelas Xi Semester 1 Dicky Zhue

$\begin{array}{ll}\\ \fbox{1}.&\textrm{Panjang vektor}\: \: \vec{a}=\displaystyle \begin{pmatrix} -7\\ 24 \end{pmatrix}\: \: \textrm{adalah}....\\ &\begin{array}{lll}\\ \textrm{a}.\quad 8&&\textrm{d}.\quad 25\\ \textrm{b}.\quad 12&\textrm{c}.\quad 17&\textrm{e}.\quad 35 \end{array} \end{array}\\\\\\ \textrm{Jawab}:\: \: \textbf{d}\\\\ \begin{aligned}\textrm{Panjang Vektor}\: \: \vec{a}&=\displaystyle \begin{pmatrix} -7\\ 24 \end{pmatrix}\: \: \textrm{adalah}:\\ \left | \vec{a} \right |&=\sqrt{(-7)^{2}+(24)^{2}}\\ &=\sqrt{49+576}\\ &=\sqrt{625}\\ &=25 \end{aligned}$

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