\int{3\over{x(lnx)^3}}dx

int{e^{-1/x}over{x^2}}dx

\int{x^2\over{\sqrt{x^3+3}}}dx

\int{(2x^3-x)^4(6x^2-1)}dx

\int{x\over{x+1}}dx

\int{ln3x\over{x}}dx

\int{x^2 e^{{x^3}+1}}dx

\int{3y^2 \sqrt{y^3-1}dy}

\int{2x \over{(3x^2+3)^5}}dx