obliczyć całke

[damcios]

\(\displaystyle{ \int_{}^{} \frac{1}{1+( \frac{1}{x})^{2} }}\)

[Qń]

\(\displaystyle{ \frac{1}{1+( \frac{1}{x})^{2} }=\frac{x^2}{x^2+1}=\frac{x^2+1-1}{x^2+1}}\)

Q.