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\vec u = (4, 3) について、同じ大きさの垂直なベクトルを計算せよ。(答: (-3, 4) または (3, -4) )
\vec u = (4, 3) について、同じ大きさの垂直なベクトルを計算せよ。(答: (-3, 4) または (3, -4) )
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