$f(x)=\frac{c x+d}{a x+b}$ ফাংশনের রেঞ্জ হলো-

$\mathbb{R}$

$\mathbb{R}-\left\{\frac{b}{a}\right\}$

$\mathbb{R}-\left\{-\frac{b}{a}\right\}$

$\mathbb{R}-\left\{\begin{array}{l}c \\a\end{array}\right\}$