indefinite-integration

Question: $\int_{{}}^{{}}{{{\left( x+\frac{1}{x} \right)}^{3}}}dx=$

1) $\frac{1}{4}{{\left( x+\frac{1}{x} \right)}^{4}}+c$

2) $\frac{{{x}^{4}}}{4}+\frac{3{{x}^{2}}}{2}+3\log x-\frac{1}{2{{x}^{2}}}+c$

3) $\frac{{{x}^{4}}}{4}+\frac{3{{x}^{2}}}{2}+3\log x+\frac{1}{{{x}^{2}}}+c$

4) None of these

Solution:

Explanation: No Explanation

Fundamental integration

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