(b)The determinant can be written sum of $2 \times 2 \times 2 = 8$ determinants of which $ 6 $ are reduces to zero because of their two rows are identical. Hence proceed.
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
સમીકરણ $\left|\begin{array}{ccc}1+\sin ^{2} x & \sin ^{2} x & \sin ^{2} x \\ \cos ^{2} x & 1+\cos ^{2} x & \cos ^{2} x \\ 4 \sin 2 x & 4 \sin 2 x & 1+4 \sin 2 x\end{array}\right|=0,(0< x< \pi) $ નો ઉકેલ મેળવો.
જો $A$ એ સંમિત શ્રેણિક છે અને $B$ વિસંમિત શ્રેણિક છે કે જેથી $A + B = \left[ {\begin{array}{*{20}{c}}
2&3\\
5&{ - 1}
\end{array}} \right]$ , તો $AB$ મેળવો.