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IB 數學(高等級)/向量
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IB Mathematics (HL)
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向量既有大小也有方向。它表示為二維或三維實體。
在二維表述中:r = 7i+8j
在三維表述中:r = 9i+5j+6k
i、j、k 分別表示 x、y 和 z 軸方向上的大小。
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書籍:IB 數學(高等級)
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