y x = x 1 2 y {\displaystyle {\frac {y}{x}}={\frac {x}{{\tfrac {1}{2}}y}}}
x = 4 y {\displaystyle x={\sqrt {4y}}}
x y = x y 2 {\displaystyle {\frac {\sqrt {x}}{y}}={\sqrt {\frac {x}{y^{2}}}}}
x 3 y = x y 3 3 {\displaystyle {\frac {\sqrt[{3}]{x}}{y}}={\sqrt[{3}]{\frac {x}{y^{3}}}}}
![{\displaystyle {\frac {\sqrt[{3}]{x}}{y}}={\sqrt[{3}]{\frac {x}{y^{3}}}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/afaf4b0760ba4cf227cb52cd2f45c485495a6dd9)
