y=-4cospix шешу

$$y = - 4 \cos \pi x$$

x мәнін табыңыз (complex solution)

$$x=-\frac{i\ln(\frac{\sqrt{y^{2}-16}-y}{4})}{\pi }+2n_{1}\text{, }n_{1}\in \mathrm{Z}$$

$$x=-\frac{i\ln(\frac{-\sqrt{y^{2}-16}-y}{4})}{\pi }+2n_{2}\text{, }n_{2}\in \mathrm{Z}$$

x мәнін табыңыз

$$x=-\frac{\arccos(\frac{y}{4})}{\pi }+2n_{1}+1\text{, }n_{1}\in \mathrm{Z}$$

$$x=\frac{\arccos(\frac{y}{4})}{\pi }+2n_{2}-1\text{, }n_{2}\in \mathrm{Z}\text{, }|y|\leq 4$$

y мәнін табыңыз

$$y=-4\cos(\pi x)$$