यदि $x, y, z \in \mathbb{R}$ है,तो सारणिक $\left|\begin{array}{lll}\left(5^{x}+5^{-x}\right)^{2} & \left(5^{x}-5^{-x}\right)^{2} & 1 \\ \left(6^{x}+6^{-x}\right)^{2} & \left(6^{x}-6^{-x}\right)^{2} & 1 \\ \left(7^{x}+7^{-x}\right)^{2} & \left(7^{x}-7^{-x}\right)^{2} & 1\end{array}\right|$ का मान क्या है?

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

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सारणिकों के गुणधर्मों का उपयोग करके सिद्ध कीजिए कि:
$\left|\begin{array}{ccc}-a^{2} & ab & ac \\ ba & -b^{2} & bc \\ ca & cb & -c^{2}\end{array}\right|=4a^{2}b^{2}c^{2}$

यदि $a=1+2+4+\cdots$ $n$ पदों तक,$b=1+3+9+\cdots$ $n$ पदों तक और $c=1+5+25+\cdots$ $n$ पदों तक है,तो $\Delta=\left|\begin{array}{ccc}a & 2b & 4c \\ 2 & 2 & 2 \\ 2^n & 3^n & 5^n\end{array}\right|=$

यदि $\Delta = \begin{vmatrix} x+y+z^2 & x^2+y+z & x+y^2+z \\ z^2 & x^2 & y^2 \\ x+y & y+z & x+z \end{vmatrix}$,(जहाँ $x \neq y \neq z$ और $x, y, z \in \mathbb{R} - \{0\}$),तो $\Delta = $ . . . . . . .

$\left| {\begin{array}{ccc} a + b & b + c & c + a \\ b + c & c + a & a + b \\ c + a & a + b & b + c \end{array}} \right| = K \left| {\begin{array}{ccc} a & b & c \\ b & c & a \\ c & a & b \end{array}} \right|$,तो $K = $

यदि ${a_1}, {a_2}, {a_3}, \dots, {a_n}, \dots$ एक $G.P.$ में हैं,तो सारणिक $\left| \begin{array}{ccc} \log {a_n} & \log {a_{n+1}} & \log {a_{n+2}} \\ \log {a_{n+3}} & \log {a_{n+4}} & \log {a_{n+5}} \\ \log {a_{n+6}} & \log {a_{n+7}} & \log {a_{n+8}} \end{array} \right|$ का मान क्या है?

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