જો $x^2+y^2+z^2 \neq 0, \quad x=cy+bz, \quad y=az+cx$ અને $z=bx+ay$ હોય, તો $a^2+b^2+c^2+2abc$ ની કિંમત શોધો.

  • A
    $1$
  • B
    $2$
  • C
    $a+b+c$
  • D
    $ab+bc+ca$

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ધન સંખ્યાઓ $x, y$ અને $z$ માટે,નિશ્ચાયક $\left| \begin{array}{ccc} 1 & \log_x y & \log_x z \\ \log_y x & 1 & \log_y z \\ \log_z x & \log_z y & 1 \end{array} \right|$ નું સંખ્યાત્મક મૂલ્ય શું છે?

$\left|\begin{array}{ccc}\cos \alpha \cos \beta & \cos \alpha \sin \beta & -\sin \alpha \\ -\sin \beta & \cos \beta & 0 \\ \sin \alpha \cos \beta & \sin \alpha \sin \beta & \cos \alpha\end{array}\right|$ ની કિંમત શોધો.

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ધારો કે $A = \begin{bmatrix} 3-t & 1 & 0 \\ -1 & 3-t & 1 \\ 0 & -1 & 0 \end{bmatrix}$ અને $\det(A) = 5$ છે, તો $t$ ની કિંમત શોધો.

જો $\left|\begin{array}{ll}2 & 3 \\ 4 & 5\end{array}\right|=\left|\begin{array}{ll}x & 3 \\ 2x & 5\end{array}\right|$ હોય,તો $x$ ની કિંમત શોધો.

જો $\left|\begin{array}{ccc}9 & 25 & 16 \\ 16 & 36 & 25 \\ 25 & 49 & 36\end{array}\right|=K$ હોય, તો $K, K+1$ એ કયા સમીકરણના બીજ છે?

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