oblicz calke

[gufox]

\(\displaystyle{ \int \frac{cosx}{sin ^{2}x }dx } = \begin{bmatrix} sinx=t\\ cosxdx=dt\end{bmatrix} = t \frac{dt}{t ^{2} }= - \frac{1}{sinx} +C}\)


prosze o sprawdzenie.

[meninio]

dobrze