Riješi +sinxcosydy=0

$$+ \sin x \cos y d y = 0$$

Izračunaj d

$$\left\{\begin{matrix}d=\frac{\pi n_{2}}{y^{2}}+\frac{\pi }{2y^{2}}\text{, }n_{2}\in \mathrm{Z}\text{, }&y\neq 0\\d\in \mathrm{R}\text{, }&\exists n_{1}\in \mathrm{Z}\text{ : }x=\pi n_{1}\end{matrix}\right,$$

Izračunaj x

$$\left\{\begin{matrix}\\x=\pi n_{1}\text{, }n_{1}\in \mathrm{Z}\text{, }&\text{unconditionally}\\x\in \mathrm{R}\text{, }&\exists n_{2}\in \mathrm{Z}\text{ : }d=\frac{\pi n_{2}}{y^{2}}+\frac{\pi }{2y^{2}}\text{, }not(n_{2}<0)\text{ and }y\neq 0\end{matrix}\right,$$