નિશ્ચાયક $\left| {\begin{array}{*{20}{c}}{1 + a + x}&{a + y}&{a + z}\\{b + x}&{1 + b + y}&{b + z}\\{c + x}&{c + y}&{1 + c + z}\end{array}} \right|$ ની કિંમત શોધો.

  • A
    $1 + a + b + c + x + y + z$
  • B
    $1 + a + b + c$
  • C
    $1 + x + y + z$
  • D
    $1 + a + b + c + x + y + z$

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$\left|\begin{array}{ccc}a-b-c & 2a & 2a \\ 2b & b-c-a & 2b \\ 2c & 2c & c-a-b\end{array}\right|$ ની કિંમત શોધો.

જો $A = \begin{bmatrix} 2 & 5 \\ 3 & 7 \end{bmatrix}$ અને $B = \begin{bmatrix} 0 & 3 \\ 4 & 1 \end{bmatrix}$ હોય,તો નીચેનામાંથી કયો ગુણધર્મ સાચો છે?

જો $\left|\begin{array}{ccc}1+\sin ^{2} \theta & \cos ^{2} \theta & 4 \sin 2 \theta \\ \sin ^{2} \theta & 1+\cos ^{2} \theta & 4 \sin 2 \theta \\ \sin ^{2} \theta & \cos ^{2} \theta & 4 \sin 2 \theta-1\end{array}\right|=0$ અને $0 < \theta < \frac{\pi}{2}$ હોય,તો $\cos 4 \theta$ ની કિંમત શોધો.

નિશ્ચાયકના ગુણધર્મોનો ઉપયોગ કરીને સાબિત કરો કે:
$\left|\begin{array}{lll}x & x^{2} & y z \\ y & y^{2} & z x \\ z & z^{2} & x y\end{array}\right|=(x-y)(y-z)(z-x)(x y+y z+z x)$

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$\left| {\begin{array}{ccc} a - b - c & 2a & 2a \\ 2b & b - c - a & 2b \\ 2c & 2c & c - a - b \end{array}} \right| = $

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