- y=(3π)xy=\left(\frac{3}{\pi}\right)^{x}
- y=(√2020−√2019)xy=(\sqrt{2020}-\sqrt{2019})^{x}
- y=log12(x+4)y=\log _{\frac{1}{2}}(x+4)
- y=(√2+√3e)xy=\left(\frac{\sqrt{2}+\sqrt{3}}{e}\right)^{x}