## Algebra and Trigonometry 10th Edition

Domain: All real numbers. Vertical asymptotes: None. Horizontal asymptotes: $y=3$
Domain: $x^2 +1 \ne 0$ $x^2\ne-1$ $x\ne \pm i$ All real numbers. Identify vertical asymptotes. These occur at the zeros of the denominator of the function: No vertical asymptotes. Identify any horizontal asymptotes by describing the behavior as x goes to infinity: $f(x)\rightarrow 3$ as $x \rightarrow \infty$ $y=3$