`intdx/(x(1+x^2))`

intdx/(x(1+x^10))= (A) 1/10 log((1+x^10)/x^10)+c (B) 1/10 log(x^10/(1+x^10))+c (C) 1/(1+x^10)^2+c (D) none of these

intdx/(x^2+1)^2

intdx/(x^2+1)^4

intdx/(e^x-1)^2

intdx/((1+x^2)sqrt(1-x^2))

intdx/((1+x)^(1/2)-(1+x)^(1/3))

intdx/(x(x^5 + 1))

Evaluate: intdx/((1+x^2)tan^-1x)

intdx/(x+sqrt(x))

intdx/(1+cos^2x)