Indefinite Integration

\(\left(\frac{x^4+1}{x^4}\right)^{\frac{1}{4}}+\mathrm{c}\), where \(\mathrm{c}\) is a constant of integration.

\(\left(x^4+1\right)^{\frac{1}{4}}+c\), where \(\mathrm{c}\) is a constant of integration.

\(-\left(x^4+1\right)^{\frac{1}{4}}+\mathrm{c}\), where \(\mathrm{c}\) is a constant of integration.

\(-\left(\frac{x^4+1}{x^4}\right)^{\frac{1}{4}}+\mathrm{c}\), where \(\mathrm{c}\) is a constant of integration.