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જો $P = \left[ {\begin{array}{*{20}{c}}
1&0&0 \\
3&1&0 \\
9&3&1
\end{array}} \right]$ અને $Q = [q_{ij}]$ એ $3\times3$ શ્રેણિક છે કે જેથી $Q -P^5 = I_3$. તો $\frac{{{q_{21}} + {q_{31}}}}{{{q_{32}}}} =$
નિશ્રાયક $\Delta = \left| {\,\begin{array}{*{20}{c}}{{a_1}}&{{b_1}}&{{c_1}}\\{{a_2}}&{{b_2}}&{{c_2}}\\{{a_3}}&{{b_3}}&{{c_3}}\end{array}\,} \right|$ માં જો ${A_1},{B_1},{C_1}\ ....$ એ અનુક્રમે ${a_1},{b_1},{c_1},......$ ના સહઅવયવ દર્શાવે છે તો $\left| {\begin{array}{*{20}{c}}{{B_2}}&{{C_2}}\\{{B_3}}&{{C_3}}\end{array}} \right| =\ . . . .$