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Answers for “为什么零向量的方向被认为是未定义的？”

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The length is multiplied by the absolute value of the scalar ∣c∣|c|. Specifically, 0<∣c∣<10 < |c| < 1 shortens the vector, ∣c∣>1|c| > 1 stretches it, and c=0c=0 yields the zero vector.

Conditions: Scalar multiplication operation; Considering magnitude/length changes

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