The value of \( \lim _{x \rightarrow a}\left[\left\{\left(\frac{\sqrt{a}+\sqrt{x}}{a^{1 / 4}-x^{....
The value of \( \lim _{x \rightarrow a}\left[\left\{\left(\frac{\sqrt{a}+\sqrt{x}}{a^{1 / 4}-x^{1 / 4}}\right)^{-1}-\right.\right. \) \( \left.\left.\frac{2(a x)^{1 / 4}}{x^{3 / 4}-a^{1 / 4} x^{1 / 2}+a^{1 / 2} x^{1 / 4}-a^{3 / 4}}\right\}^{-1}-(\sqrt{2})^{\log _{4} a}\right]^{8} \), is
(1) \( a \)
(2) \( a^{3 / 4} \)
(3) \( a^{2} \)
(4) \( \sqrt{a} \)
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