First of all, thanks to all my friends who took their time to follow me!!! Now,

\(Let\quad X\quad =\quad \left( \begin{matrix} { x }^{ n } & \sin { x } & \cos { x } \\ n! & \sin { \frac { n\pi }{ 2 } } & \cos { \frac { n\pi }{ 2 } } \\ { a } & { a }^{ 2 } & { a }^{ 3 } \end{matrix} \right) \)

Then find \(\frac { { d }^{ n } }{ d{ x }^{ n } } (X)\) at \(x=0\)

Thanks guys, and please help me by posting complete solutions as i need to compare my solution. Thanks!!:)

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## Comments

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TopNewestIs its answer zero? @Abhineet Nayyar

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@Tanishq Varshney , yea, but I need to confirm if my solution is legit or just some luck, Lol. Can you post your solution, please??

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i hope u know the technique of differentiating a matrix that is first differentiate first row leaving 2nd and 3rd row constant, added by differentiation of 2nd row leaving 1st and 3rd row added by differentiating 3rd row leaving 1st and 2nd

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