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pallavi pradeep bhardwaj Grade: 12
        

A and B are two points .The position vector of A is 6b-2a.A point P divides the line AB in the ratio 1:2 If a-b is the p.v. of P then the P.V. of B is given by

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear palllavi


use section formula.


let position vector of B is r


so position vector of P = (1* position vector of B  + 2 * position vector of a)/(2+1)


     a-b  = (r +2(6b-2a))/2


 2a-2b  =r +12b -4a


 r= 6a-14b


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Badiuddin

7 years ago
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