Question
Which of the following represents coinitial vector:
- c, d
- m, b
- b, d
- Both (a) and (b)
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$(A)$: $\max \left\{\left|a_1\right|,\left|a_2\right|,\left|a_3\right|\right\} \leq|\vec{a}|$
$(B)$: $|\vec{a}| \leq 3 \max \left\{\left| a _1\right|,\left| a _2\right|,\left| a _3\right|\right\}$
$\frac{17}{\sqrt{77}}$
$\frac{7}{6}$
$21$
$\frac{7}{9}$
If matrix A = [aij]2×2, where aij = 1, if $\text{i}\neq\text{j}$ and 0 if i = j then A2 equal to: