\(\left\{{}\begin{matrix}2x+3\ge0\\x-1\ne0\end{matrix}\right.=>\left\{{}\begin{matrix}x\ge-\dfrac{3}{2}\\x\ne1\end{matrix}\right.\)
Vậy tập xác định của f(x) \([-\dfrac{3}{2};+\infty)\) \ \(\left\{1\right\}\)
\(f\left(x\right)=\dfrac{\sqrt{2x+3}}{x-1}\)
TXĐ: \(\left\{{}\begin{matrix}2x+3\ge0\\x-1\ne0\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x\ge-\dfrac{3}{2}\\x\ne1\end{matrix}\right.\)
Vậy \(D=\left(-\dfrac{3}{2};+\text{ ∞}\right)\backslash1\)