If l2i+m2i+n2i=1 andlilj+mimj+ninj=0 for i≠j where i,j∈{1,2,3} an – InterviewSolution

1.	If l2i+m2i+n2i=1 andlilj+mimj+ninj=0 for i≠j where i,j∈{1,2,3} andA=⎡⎢⎣l1m1n1l2m2n2l3m3n3⎤⎥⎦,then\|A\|=
Answer» If $l_{i}^{2} + m_{i}^{2} + n_{i}^{2} = 1$ and $l_{i} l_{j} + m_{i} m_{j} + n_{i} n_{j} = 0$ for $i \neq j$ where $i, j \in {1, 2, 3}$ and $A = ⎡ ⎢ ⎣ \begin{matrix} l_{1} & m_{1} & n_{1} l_{2} & m_{2} & n_{2} l_{3} & m_{3} & n_{3} \end{matrix} ⎤ ⎥ ⎦, then \| A \| =$

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