Indefinite Integration

$\frac{4}{15}\left(\frac{\left(x^3-1\right)^5}{x^{15}}\right)^{1 / 4}+C$

$\frac{4}{15}\left(\frac{x^4+1}{x^4}\right)^{1 / 4}+C$

$\frac{\sqrt{x^4+x^2+1}}{x}+C$

$\frac{3}{4}\left(x^{4 / 3}+x^{1 / 3}\right)+C$