I-solve ang x (complex solution)
x=i\sqrt[4]{16-y^{4}}
x=\sqrt[4]{16-y^{4}}
x=-\sqrt[4]{16-y^{4}}
x=-i\sqrt[4]{16-y^{4}}
I-solve ang y (complex solution)
y=i\sqrt[4]{16-x^{4}}
y=\sqrt[4]{16-x^{4}}
y=-\sqrt[4]{16-x^{4}}
y=-i\sqrt[4]{16-x^{4}}
I-solve ang x
\left\{\begin{matrix}x=\sqrt{-\sqrt{4-y^{2}}}\sqrt[4]{y^{2}+4}\text{; }x=-\sqrt{-\sqrt{4-y^{2}}}\sqrt[4]{y^{2}+4}\text{, }&|y|=2\\x=\sqrt[4]{16-y^{4}}\text{; }x=-\sqrt[4]{16-y^{4}}\text{, }&|y|\leq 2\end{matrix}\right.
I-solve ang y
\left\{\begin{matrix}y=\sqrt{-\sqrt{4-x^{2}}}\sqrt[4]{x^{2}+4}\text{; }y=-\sqrt{-\sqrt{4-x^{2}}}\sqrt[4]{x^{2}+4}\text{, }&|x|=2\\y=\sqrt[4]{16-x^{4}}\text{; }y=-\sqrt[4]{16-x^{4}}\text{, }&|x|\leq 2\end{matrix}\right.
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