November 24. - Improprius integrálok

${\int }_2^{\infty }\frac{dx}{2^{(x-1{)}^2}}dx$ ${\int }_0^{\infty }\frac{dx}{1+x^2}dx$ ${\int }_1^2\frac{dx}{\sqrt{x-1}}dx$ ${\int }_0^{\infty }x\cdot e^{-x^2}dx$ ${\int }_0^1\frac{x^2}{\sqrt{1-x^2}}dx$