29. Consider the matrix:

\(j_6= \begin{vmatrix}0&0&0&0&0&1\\0&0&0&0&1&0\\0&0&0&1&0&0\\0&0&1&0&0&0\\0&1&0&0&0&0\\1&0&0&0&0&0\end{vmatrix} \)

Which is obtained by  reversing  the order of the columns of the identity matrix  I6 .  Let P=I6 + αJ6 where α is a non-negative real number. The value of α for which det(P) = 0 is ___________.

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