Ответ:
0\end{array}\right\ \ \ ili\ \ \ \left\{\begin{array}{l}x-3\geq 0\\4^{x}-11\end{array}\right\ \ \ ili\ \ \ \left\{\begin{array}{ccc}x\geq 3\\4^{x}" alt="\dfrac{x-3}{4^{x}-1}\leq 0\ \ \ \Rightarrow \ \ \ \left\{\begin{array}{l}x-3\leq 0\\4^{x}-1>0\end{array}\right\ \ \ ili\ \ \ \left\{\begin{array}{l}x-3\geq 0\\4^{x}-11\end{array}\right\ \ \ ili\ \ \ \left\{\begin{array}{ccc}x\geq 3\\4^{x}" align="absmiddle" class="latex-formula">
0\end{array}\right\ \ \ ili\ \ \ \left\{\begin{array}{ccc}x\geq 3\\x" alt="\left\{\begin{array}{ccc}x\leq 3\\x>0\end{array}\right\ \ \ ili\ \ \ \left\{\begin{array}{ccc}x\geq 3\\x" align="absmiddle" class="latex-formula">