સમતલો $x = cy + bz, y = az + cx, z = bx + ay$ એક રેખામાંથી પસાર થાય છે,જો

  • A
    $a + b + c = 0$
  • B
    $a + b + c = 1$
  • C
    $a^2 + b^2 + c^2 = 1$
  • D
    $a^2 + b^2 + c^2 + 2abc = 1$

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જો $60 \hat{i}+3 \hat{j}$,$40 \hat{i}-8 \hat{j}$ અને $a \hat{i}-52 \hat{j}$ સ્થાન સદિશો ધરાવતા બિંદુઓ સમરેખ હોય,તો $a$ ની કિંમત શોધો.

નિશ્ચાયક $\left| \begin{array}{ccc} 4 & -6 & 1 \\ -1 & -1 & 1 \\ -4 & 11 & -1 \end{array} \right|$ નું મૂલ્ય શોધો.

$\left|\begin{array}{ccc}x+2 & x+3 & x+5 \\ x+4 & x+6 & x+9 \\ x+8 & x+11 & x+15\end{array}\right|$ ની કિંમત શોધો.

$\left|\begin{array}{ccc}\sqrt{3} & 2 \sqrt{5} & \sqrt{5} \\ \sqrt{15} & 5 & \sqrt{10} \\ 3 & \sqrt{15} & 5\end{array}\right|=$

જો $\left|\begin{array}{cc}x & 2 \\ 18 & x\end{array}\right|=\left|\begin{array}{cc}6 & 2 \\ 18 & 6\end{array}\right|,$ હોય,તો $x$ ની કિંમત શોધો.

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