मान लीजिए $A = \begin{bmatrix} x + \lambda & x & x \\ x & x + \lambda & x \\ x & x & x + \lambda \end{bmatrix}$,तो $A^{-1}$ का अस्तित्व है यदि

  • A
    $x \ne 0$
  • B
    $\lambda \ne 0$
  • C
    $3x + \lambda \ne 0, \lambda \ne 0$
  • D
    $x \ne 0, \lambda \ne 0$

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उपयुक्त कोटि के दो व्युत्क्रमणीय आव्यूहों $A$ और $B$ के लिए,$(AB)^{-1}$ का मान क्या है?

यदि $A = \begin{bmatrix} 1 & 3 & 4 \\ 2 & 1 & 2 \\ 5 & 1 & 1 \end{bmatrix}$ है,तो $|\text{adj } A| = $ . . . . . .

यदि $A = \begin{bmatrix} a & 0 & 0 \\ 0 & a & 0 \\ 0 & 0 & a \end{bmatrix}$ है,तो $|A| |adj A|$ का मान ज्ञात कीजिए।

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यदि $A = \begin{bmatrix} 1 & -1 \\ 2 & -1 \end{bmatrix}$ और $B = \begin{bmatrix} 1 & 1 \\ 4 & -1 \end{bmatrix}$ है,तो $(A+B)^{-1}$ क्या होगा?

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