ĐKXĐ: \(\left\{{}\begin{matrix}x-2m+1\ge0\\\sqrt{x-2m+1}-3\ne0\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}x\ge2m-1\\x\ne2m+8\end{matrix}\right.\)
Để hàm số xác định trên khoảng đã cho
\(\Rightarrow\left\{{}\begin{matrix}2m-1\le0\\\left[{}\begin{matrix}2m+8\le0\\2m+8\ge1\end{matrix}\right.\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}m\le\dfrac{1}{2}\\\left[{}\begin{matrix}m\le-4\\m\ge-\dfrac{7}{2}\end{matrix}\right.\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}m\le-4\\-\dfrac{7}{2}\le m\le\dfrac{1}{2}\end{matrix}\right.\)