If \[f(x)=\left| \begin{matrix} {{2}^{-x}} & {{e}^{x{{\log }_{e}}2}} & {{x}^{2}} \\ {{2}^{-3x}} & {{e}^{3x{{\log }_{e}}2}} & {{x}^{4}} \\ {{2}^{-5x}} & {{e}^{5x{{\log }_{e}}2}} & 1 \\ \end{matrix} \right|,\] then

If \[f(x)=\left| \begin{matrix} {{2}^{-x}} & {{e}^{x{{\log }_{e}}

1.	If \[f(x)=\left\| \begin{matrix} {{2}^{-x}} & {{e}^{x{{\log }_{e}}2}} & {{x}^{2}} \\ {{2}^{-3x}} & {{e}^{3x{{\log }_{e}}2}} & {{x}^{4}} \\ {{2}^{-5x}} & {{e}^{5x{{\log }_{e}}2}} & 1 \\ \end{matrix} \right\|,\] then
A.	\[f(x)+f(-x)=0\]
B.	\[f(x)-f(-x)=0\]
C.	\[f(x)+f(-x)=2\]
D.	None of these
Answer» B. \[f(x)-f(-x)=0\]

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If \[f(x)=\left| \begin{matrix} {{2}^{-x}} & {{e}^{x{{\log }_{e}}2}} & {{x}^{2}} \\ {{2}^{-3x}} & {{e}^{3x{{\log }_{e}}2}} & {{x}^{4}} \\ {{2}^{-5x}} & {{e}^{5x{{\log }_{e}}2}} & 1 \\ \end{matrix} \right|,\] then

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