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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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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