e3x(x23−2x3+227)e^{3 x}\left(\frac{x^{2}}{3}-\frac{2 x}{3}+\frac{2}{27}\right)e3x(3x2−32x+272)
(lnx)23−2lnx9+227+c\frac{(\ln x)^{2}}{3}-\frac{2 \ln x}{9}+\frac{2}{27}+c3(lnx)2−92lnx+272+c
x3{(lnx)2−2lnx+2}+cx^{3}\left\{(\ln x)^{2}-2 \ln x+2\right\}+cx3{(lnx)2−2lnx+2}+c
x3{(lnx)23−2lnx9+227}+cx^{3}\left\{\frac{(\ln x)^{2}}{3}-\frac{2 \ln x}{9}+\frac{2}{27}\right\}+cx3{3(lnx)2−92lnx+272}+c