If a→=2i^-j^+k^, b→=i^+j^-2k^ and c→=i^+3j^-k^, find λ such tha – InterviewSolution

1.	If a→=2i^-j^+k^, b→=i^+j^-2k^ and c→=i^+3j^-k^, find λ such that a→ is perpendicular to λb→+c→. [NCERT EXEMPLAR]
Answer» If $\vec{a} = 2 \hat{i} - \hat{j} + \hat{k}$ , $\vec{b} = \hat{i} + \hat{j} - 2 \hat{k}$ and $\vec{c} = \hat{i} + 3 \hat{j} - \hat{k}$ , find λ such that $\vec{a}$ is perpendicular to $λ \vec{b} + \vec{c}$ . [NCERT EXEMPLAR]

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