Solve {l}{x*ygeq2}{mu-y=4}

$$\left. \begin{array} { l } { x \times y \geq 2 } \\ { \mu - y = 4 } \end{array} \right.$$

Solve for x

$$\left\{\begin{matrix}x\leq \frac{2}{\mu -4}\text{, }&\mu <4\text{ and }y=\mu -4\\x\in [\frac{2}{\mu -4},\infty)\cup [\text{Indeterminate},\infty)\text{, }&\mu >4\text{ and }y=\mu -4\\x\in [\text{Indeterminate},\frac{2}{\mu -4}]\text{, }&\mu \neq 4\text{ and }y=\mu -4\end{matrix}\right.$$

Solve for μ

$$\mu =y+4$$

$$\left(y<0\text{ or }x\geq \frac{2}{y}\right)\text{ and }\left(x\leq \frac{2}{y}\text{ or }y>0\right)\text{ and }y\neq 0$$