निम्नलिखित में से किस आव्यूह की कोटि (rank) $3$ है?

  • A
    $\left[\begin{array}{ccc}10 & 11 & 12 \\ 11 & 12 & 13 \\ 12 & 13 & 14\end{array}\right]$
  • B
    $\left[\begin{array}{ccc}0 & -51 & 101 \\ 51 & 0 & -581 \\ -101 & 581 & 0\end{array}\right]$
  • C
    $\left[\begin{array}{ccc}0 & 1 & 2 \\ -1 & 0 & 5 \\ -2 & 7 & 0\end{array}\right]$
  • D
    $\left[\begin{array}{lll}1 & 2 & 3 \\ 2 & 4 & 6 \\ 3 & 6 & 9\end{array}\right]$

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यदि $f(x) = \left| \begin{array}{ccc} -\sin x & 2 \sin 2x & 4 \cos^2 x \\ \cos x & 4 \sin^2 x & 2 \sin 2x \\ 0 & -\cos x & \sin x \end{array} \right|$ है, तो $f\left(\frac{5\pi}{4}\right) + f'\left(\frac{5\pi}{4}\right) = $

आव्यूह $\begin{bmatrix} 1 & -1 & 1 \\ 1 & 1 & -1 \\ -1 & 1 & 1 \end{bmatrix}$ की कोटि (rank) है

$f(x) = \left| \begin{array}{ccc} x^3 & x^2 & 3x^2 \\ 1 & -6 & 4 \\ p & p^2 & p^3 \end{array} \right|$,जहाँ $p$ एक स्थिरांक है,तो $\frac{d^3f(x)}{dx^3}$ क्या है?

Difficult
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मान लीजिए $\Delta = \begin{vmatrix} \sin \theta \cos \phi & \sin \theta \sin \phi & \cos \theta \\ \cos \theta \cos \phi & \cos \theta \sin \phi & -\sin \theta \\ -\sin \theta \sin \phi & \sin \theta \cos \phi & 0 \end{vmatrix}$. तो:

यदि $A = \begin{bmatrix} 0 & 1 & 2 & 3 & 4 \\ 0 & 2 & 4 & 8 & 12 \\ 0 & 0 & 0 & 4 & 8 \end{bmatrix}$ है,तो $A$ की कोटि (rank) क्या है?

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