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let v be a vector from initial point p1 = ( -11, -12 ) to terminal point p2 = ( 2,5 ). write v in terms fo i and j.

 Nov 19, 2015
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let v be a vector from initial point p1 = ( -11, -12 ) to terminal point p2 = ( 2,5 ). write v in terms fo i and j.

\(\mbox{If we have to points }p_1, p_2 \mbox{ the vector from }p_1 \to p_2 \mbox{ is:}\\ v= p_2 - p_1 = (p_{2x}-p_{1x})\hat{i} + (p_{2y}-p_{1y})\hat{j}\)

 

 \(v = (2-(-11))\hat{i}+(5-(-12))\hat{j} = 13 \hat{i} + 17 \hat{j}\)

 Nov 20, 2015

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