यदि $A = \begin{bmatrix} \cos \theta & \sin \theta \\ -\sin \theta & \cos \theta \end{bmatrix}$ है,तो $A' = $ . . . . . . .

  • A
    $\begin{bmatrix} \cos \theta & -\sin \theta \\ \sin \theta & \cos \theta \end{bmatrix}$
  • B
    $\begin{bmatrix} -\cos \theta & \sin \theta \\ \sin \theta & \cos \theta \end{bmatrix}$
  • C
    $\begin{bmatrix} \cos 3\theta & -\sin 3\theta \\ -\sin 3\theta & \cos 3\theta \end{bmatrix}$
  • D
    $\begin{bmatrix} \cos \theta & \sin \theta \\ -\sin \theta & \cos \theta \end{bmatrix}$

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आव्यूह $A = \begin{bmatrix} \frac{1}{\sqrt{2}} & \frac{1}{\sqrt{2}} \\ -\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} \end{bmatrix}$ है

जब $A=\left[\begin{array}{ccc}0 & a & b \\ -a & 0 & c \\ -b & -c & 0\end{array}\right]$ हो,तो $\frac{1}{2}(A+A^{\prime})$ और $\frac{1}{2}(A-A^{\prime})$ ज्ञात कीजिए।

Difficult
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यदि $A$ एक विषम सममित आव्यूह (skew symmetric matrix) है,तो $A^{2021}$ है

एक ऑर्थोगोनल (लंबकोणीय) आव्यूह है

यदि $A=\left[\begin{array}{lll}1 & 2 & 3 \\ 4 & 3 & 2 \\ 3 & 4 & 5\end{array}\right]$ है,तो $(A+A^T)(A-A^T)=$

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