Vektor-vektor u, v, dan w tak nol dan $$\left | u \right |=\left | v \right |\\$$. Jika $$\left | v-w \right | = \left | u-w \right |$$, maka
A. $$u.v = \left | w \right |$$ B. $$w=\frac{2u+3v}{5}$$ C. $$\left | u-w \right | = \left | v \right |$$ D. u – v tegak lurus w E. u + v tegak lurus w
D. u – v tegak lurus w
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