Math  /  Algebra

QuestionTheme
Question 9 of 18{ }^{18} The unit vector parallel to the vector u=(2,4,4)u=(2,4,-4) is (1/5,2/5,2/5)(1 / 5,2 / 5,-2 / 5) (1/9,2/9,2/9)(1 / 9,2 / 9,-2 / 9) (1/3,2/3,2/3)(-1 / 3,-2 / 3,2 / 3) (1/18,2/18,2/18)(1 / 18,2 / 18,-2 / 18)

Studdy Solution
نقسم كل عنصر من عناصر المتجه u u على طوله لإيجاد المتجه الوحدة:
المتجه الوحدة u^ \hat{u} هو:
u^=(26,46,46) \hat{u} = \left( \frac{2}{6}, \frac{4}{6}, \frac{-4}{6} \right)
نبسط الكسور:
u^=(13,23,23) \hat{u} = \left( \frac{1}{3}, \frac{2}{3}, \frac{-2}{3} \right)
المتجه الوحدة الموازي للمتجه u u هو:
(13,23,23) \boxed{\left( \frac{1}{3}, \frac{2}{3}, \frac{-2}{3} \right)}

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