(Solved): For the following function find \( (a) f(6),(b) f\left(-\frac{1}{2}\right),(c) f(a),(d) f\left(\fra ...

For the following function find \( (a) f(6),(b) f\left(-\frac{1}{2}\right),(c) f(a),(d) f\left(\frac{2}{m}\right) \), and \( (e) \) any values of \( x \) such that \( f(x)=1 \). \[ f(x)=\left\{\begin{array}{ll} \frac{2 x+4}{x-6} & \text { if } x \neq 6 \\ 2 & \text { if } x=6 \end{array}\right. \]