\left. \begin{array} { c } { f ( x ) = \frac { 8 x + 3 } { 4 x - 1 } } \\ { x \neq \frac { 1 } { 4 } } \end{array} \right.
Evaluate (complex solution)
fx=\frac{8x+3}{4x-1},\ x\neq \frac{1}{4}
Solve for x
\left\{\begin{matrix}x=-\frac{3}{8}=-0.375\text{, }&f=0\\x=\frac{\sqrt{f^{2}+64f+64}+f+8}{8f}\text{; }x=\frac{-\sqrt{f^{2}+64f+64}+f+8}{8f}\text{, }&f\leq -8\sqrt{15}-32\text{ or }\left(f\neq 0\text{ and }f\geq 8\sqrt{15}-32\right)\end{matrix}\right.
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