Rational Function Analysis 575356
1. **Stating the problem:**
Create a similar problem to the given one: For $$y = \frac{2x - 1}{x^2 - x - 6}$$ find all asymptotes, state the domain and range, find the intercepts, determine increasing/decreasing intervals, and sketch the graph.
2. **New problem:**
Consider the function $$y = \frac{3x + 2}{x^2 - 4x + 3}$$.
3. **Find all asymptotes:**
- Vertical asymptotes occur where the denominator is zero: solve $$x^2 - 4x + 3 = 0$$.
- Factor denominator: $$(x - 3)(x - 1) = 0$$ so vertical asymptotes at $$x = 1$$ and $$x = 3$$.
- Horizontal asymptote: compare degrees of numerator and denominator (both degree 2 and 1 respectively). Since degree denominator > numerator, horizontal asymptote at $$y = 0$$.
4. **State the domain:**
Domain is all real numbers except where denominator is zero: $$x \neq 1, 3$$.
5. **Find intercepts:**
- x-intercepts: set numerator zero: $$3x + 2 = 0 \Rightarrow x = -\frac{2}{3}$$.
- y-intercept: set $$x=0$$: $$y = \frac{3(0) + 2}{0 - 0 + 3} = \frac{2}{3}$$.
6. **Determine increasing/decreasing intervals:**
- Find derivative $$y'$$ using quotient rule:
$$y' = \frac{(3)(x^2 - 4x + 3) - (3x + 2)(2x - 4)}{(x^2 - 4x + 3)^2}$$
- Simplify numerator and find critical points by setting numerator zero.
- Analyze sign of $$y'$$ to find intervals.
7. **Sketch the graph:**
- Plot vertical asymptotes at $$x=1$$ and $$x=3$$.
- Plot horizontal asymptote at $$y=0$$.
- Plot intercepts at $$(-\frac{2}{3}, 0)$$ and $$(0, \frac{2}{3})$$.
- Use increasing/decreasing intervals to shape the curve.
This problem mirrors the original in structure and complexity.