1.

If a and b are the position vectors of A and B respectively, then the position vector of a point C on AB produced such that \[\overrightarrow{AC}=3\overrightarrow{AB}\] is                                                                                           [MNR 1980; MP PET 1995, 99]

A. \[3\mathbf{a}-\mathbf{b}\]
B. \[3\mathbf{b}-\mathbf{a}\]
C. \[3\mathbf{a}-2\mathbf{b}\]              
D. \[3\mathbf{b}-2\mathbf{a}\]
Answer» E.


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