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Q16Section A (Section A)16 of 60

Rank and solvability of a 3 by 5 system

Let AA be a 3×53\times 5 matrix defined by A=(01312 16234 18858).A=\begin{pmatrix}0&1&3&1&2\ 1&6&2&3&4\ 1&8&8&5&8\end{pmatrix}. Consider the system of linear equations given by A(x1 x2 x3 x4 x5)=(3 1 10),A\begin{pmatrix}x_1\ x_2\ x_3\ x_4\ x_5\end{pmatrix}=\begin{pmatrix}3\ 1\ 10\end{pmatrix}, where x1,x2,x3,x4,x5x_1,x_2,x_3,x_4,x_5 are real variables. Then

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