જો $x, y, z \in \mathbb{R}$ હોય,તો નિશ્ચાયક $\left|\begin{array}{lll}\left(5^{x}+5^{-x}\right)^{2} & \left(5^{x}-5^{-x}\right)^{2} & 1 \\ \left(6^{x}+6^{-x}\right)^{2} & \left(6^{x}-6^{-x}\right)^{2} & 1 \\ \left(7^{x}+7^{-x}\right)^{2} & \left(7^{x}-7^{-x}\right)^{2} & 1\end{array}\right|$ નું મૂલ્ય શું છે?

  • A
    $10$
  • B
    $12$
  • C
    $11$
  • D
    $0$

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Similar Questions

$f(x) = \left| \begin{array}{ccc} 1 & x & x+1 \\ 2x & x(x-1) & (x+1)x \\ 3x(x-1) & x(x-1)(x-2) & (x+1)x(x-1) \end{array} \right|$ હોય, તો $f(100)$ ની કિંમત શોધો.

શૂન્યતર,વાસ્તવિક $a, b$ અને $c$ માટે,જો $\left| \begin{array}{ccc} \frac{a^2+b^2}{c} & c & c \\ a & \frac{b^2+c^2}{a} & a \\ b & b & \frac{c^2+a^2}{b} \end{array} \right| = \alpha abc$ હોય,તો $\alpha$ ની કિંમત શોધો.

$\left| {\begin{array}{*{20}{c}}{{b^2} + {c^2}}&{{a^2}}&{{a^2}}\\{{b^2}}&{{c^2} + {a^2}}&{{b^2}}\\{{c^2}}&{{c^2}}&{{a^2} + {b^2}}\end{array}} \right| = $

સાબિત કરો કે $\left|\begin{array}{ccc}a & b & c \\ a+2x & b+2y & c+2z \\ x & y & z\end{array}\right|=0$.

જો $a \neq p, b \neq q, c \neq r$ અને $\left|\begin{array}{ccc}p & b & c \\ p+a & q+b & 2c \\ a & b & r\end{array}\right|=0$ હોય, તો $\frac{p}{p-a}+\frac{q}{q-b}+\frac{r}{r-c}$ ની કિંમત શોધો :

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