Rational Function Analysis
1. The problem is to analyze the function $$g(x) = \frac{x}{x^2 - 25}$$ and understand its properties.
2. First, identify the domain. The denominator cannot be zero, so solve $$x^2 - 25 = 0$$ which gives $$x = \pm 5$$. These values are not in the domain.
3. Find the vertical asymptotes by setting the denominator to zero: vertical asymptotes at $$x = 5$$ and $$x = -5$$.
4. To find horizontal asymptotes, compare degrees of numerator and denominator. Degree numerator = 1, denominator = 2. Because degree denominator > numerator, horizontal asymptote is $$y = 0$$.
5. Find intercepts:
- To find the y-intercept, set $$x=0$$: $$g(0) = \frac{0}{0 - 25} = 0$$.
- To find x-intercept, set numerator $$x=0$$, so intercept at $x=0$.
6. Find critical points for extrema by differentiating:
$$g'(x) = \frac{(1)(x^2 - 25) - x(2x)}{(x^2 - 25)^2} = \frac{x^2 - 25 - 2x^2}{(x^2 - 25)^2} = \frac{-x^2 - 25}{(x^2 - 25)^2}$$
7. Set numerator of derivative to zero for critical points:
$$-x^2 - 25 = 0 \implies x^2 = -25$$, which has no real solutions. So no critical points, therefore no local extrema.
Summary:
- Domain: all real numbers except $$x = \pm 5$$.
- Vertical asymptotes at $$x = \pm 5$$.
- Horizontal asymptote at $$y = 0$$.
- Intercepts at the origin (0,0).
- No extrema.
Final answer: The function $$g(x) = \frac{x}{x^2 - 25}$$ has vertical asymptotes at $$x=\pm 5$$, horizontal asymptote $$y=0$$, intercept at (0,0), and no extrema.