A) \[\int_{{}}^{{}}{\frac{{{x}^{2}}-1}{({{x}^{4}}+3{{x}^{2}}+1){{\tan }^{-1}}\left( x+\frac{1}{x} \right)}dx}\]
B) \[{{\tan }^{-1}}\left( x+\frac{1}{x} \right)+C\]
C) \[{{\cot }^{-1}}\left( x+\frac{1}{x} \right)+C\]
D) \[\log \left( x+\frac{1}{x} \right)+C\]
Correct Answer: D
Solution :
\[{{H}_{3}}P{{O}_{4}}\]\[C{{X}_{4}}+2{{O}_{2}}\xrightarrow[{}]{{}}C{{O}_{2}}+2{{X}_{2}}O\] \[C{{X}_{4}}\]\[VO_{4}^{3-}\] The most appropriate answer is \[M{{n}_{2}}{{O}_{3}}\] cm.
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