If \[A\,(1\,,\,\,2,\,\,-1)\] and \[B(-1,\,\,0,\,\,1)\] are given, then the co-ordinates of P which divides \[AB\] externally in the ratio\[1:2\], are [MP PET 1989]

If \[A\,(1\,,\,\,2,\,\,-1)\] and \[B(-1,\,\,0,\,\,1)\] are given, then

1.	If \[A\,(1\,,\,\,2,\,\,-1)\] and \[B(-1,\,\,0,\,\,1)\] are given, then the co-ordinates of P which divides \[AB\] externally in the ratio\[1:2\], are [MP PET 1989]
A.	\[\frac{1}{3}(1,\,4,-1)\]
B.	(3, 4, ?3)
C.	\[\frac{1}{3}(3,\,4,-3)\]
D.	None of these
Answer» C. \[\frac{1}{3}(3,\,4,-3)\]

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If \[A\,(1\,,\,\,2,\,\,-1)\] and \[B(-1,\,\,0,\,\,1)\] are given, then the co-ordinates of P which divides \[AB\] externally in the ratio\[1:2\], are [MP PET 1989]

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