矢量代数问题The position vectors of the points A and B,relative to an origin O,are (3,4) and (k,2k) respectively.Given that the magnitude of AB is 2,calculate the values of k.

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矢量代数问题ThepositionvectorsofthepointsAandB,relativetoanoriginO,are(3,4)and(k,2k)respectively.Giventhat

矢量代数问题The position vectors of the points A and B,relative to an origin O,are (3,4) and (k,2k) respectively.Given that the magnitude of AB is 2,calculate the values of k.
矢量代数问题
The position vectors of the points A and B,relative to an origin O,are (3,4) and (k,2k) respectively.
Given that the magnitude of AB is 2,calculate the values of k.

矢量代数问题The position vectors of the points A and B,relative to an origin O,are (3,4) and (k,2k) respectively.Given that the magnitude of AB is 2,calculate the values of k.
（k-3）²+（2k-4）²＝2².
5k²-22k+21＝0.
（k-3）（5k-7）＝0.
k1＝3.k2＝7/5.
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