Equation of the plane containing the lines vec(r )= vec(i) + 2vec(j) - – InterviewSolution

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1.	Equation of the plane containing the lines vec(r )= vec(i) + 2vec(j) -vec(k) + lamda (vec(i) + 2vec(j)-vec(k)), vec(r )=vec(i) + 2vec(j) -vec(k)+ mu (vec(i) + vec(j) + 3vec(k)) is
Answer» `vec(r).(7vec(i)-4vec(J)-vec(k))=0` `vec( r).(vec(i)+2vec(j)-vec(k))=0` `vec( r).(vec(i) + vec(j) + 3vec(k))=0` `vec(r ).(vec(i) + vec(j))= 0` ANSWER :A

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