समीकरण $\left| \begin{array}{ccc} 1 - \lambda & 2 & 1 \\ -3 & \lambda & -2 \\ 2 & -2 & 1 + \lambda \end{array} \right| = 0$ के धनात्मक पूर्णांक हलों की संख्या क्या है?

  • A
    $0$
  • B
    $2$
  • C
    $3$
  • D
    $1$

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$\left|\begin{array}{ccc}\cos \alpha \cos \beta & \cos \alpha \sin \beta & -\sin \alpha \\ -\sin \beta & \cos \beta & 0 \\ \sin \alpha \cos \beta & \sin \alpha \sin \beta & \cos \alpha\end{array}\right|$ का मान ज्ञात कीजिए।

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यदि $\left|\begin{array}{ccc}0 & ab^2 & ac^2 \\ a^2b & 0 & bc^2 \\ a^2c & b^2c & 0\end{array}\right|=m(abc)^k$ है,तो $m+k=$ . . . . . . .

यदि आव्यूह $A = \begin{bmatrix} 1 & 2 & 3 \\ 1 & 1 & 5 \\ 2 & 4 & 7 \end{bmatrix}$ है,तो $a_{31} A_{31} + a_{32} A_{32} + a_{33} A_{33}$ का मान ज्ञात कीजिए।

समीकरण $\left| \begin{array}{ccc} 1 & 1 & x \\ p+1 & p+1 & p+x \\ 3 & x+1 & x+2 \end{array} \right| = 0$ के हल हैं:

आव्यूह $A = \begin{bmatrix} 2 & 3 & 0 \\ 1 & 2 & 5 \\ 3 & -1 & 2 \end{bmatrix}$ का अभिलक्षणिक समीकरण (characteristic equation) क्या है?

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