“magnitude(of a vector)”的概念、定义、翻译、参考文献-科学参考

单词	magnitude(of a vector)
释义	magnitude(of a vector) Mathematics A vector v = (v₁,v₂,…,v_n) in ℝⁿ has magnitude $\| v \| = \sqrt{{(v_{1})}^{2} + {(v_{2})}^{2} + \dots + {(v_{n})}^{2}} .$ This is also referred to as the length of v. A vector, represented by a directed line segment $P Q$ → has magnitude equal to the distance between P and Q.
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