tan−1(x2+2)+c\tan ^{-1}\left(x^{2}+2\right)+ctan−1(x2+2)+c
cot−1(x2+2)+c\cot ^{-1}\left(\mathrm{x}^{2}+2\right)+\mathrm{c}cot−1(x2+2)+c
tan−1(x2+1)+c\tan ^{-1}\left(x^{2}+1\right)+ctan−1(x2+1)+c
cot−1(x2+1)+c\cot ^{-1}\left(x^{2}+1\right)+ccot−1(x2+1)+c