1. **State the problem:** We need to analyze the function $$f(x) = \frac{2x^2 - 3x + 1}{x^3 + 1}$$ and understand its behavior.
2. **Recall the formula and rules:** The function is a rational function, which is a ratio of two polynomials. Important points include:
- Domain restrictions where the denominator is zero.
- Simplification if possible.
- Finding intercepts by setting numerator or denominator to zero.
3. **Find domain restrictions:** The denominator is $$x^3 + 1$$. Set it to zero:
$$x^3 + 1 = 0 \implies x^3 = -1 \implies x = -1$$
So, $$x = -1$$ is not in the domain.
4. **Factor numerator and denominator:**
- Numerator: $$2x^2 - 3x + 1$$. Factor:
$$2x^2 - 3x + 1 = (2x - 1)(x - 1)$$
- Denominator: $$x^3 + 1$$ is a sum of cubes:
$$x^3 + 1 = (x + 1)(x^2 - x + 1)$$
5. **Simplify the function:**
$$f(x) = \frac{(2x - 1)(x - 1)}{(x + 1)(x^2 - x + 1)}$$
No common factors to cancel.
6. **Find intercepts:**
- **x-intercepts:** Set numerator to zero:
$$2x - 1 = 0 \implies x = \frac{1}{2}$$
$$x - 1 = 0 \implies x = 1$$
- **y-intercept:** Set $$x=0$$:
$$f(0) = \frac{2(0)^2 - 3(0) + 1}{0^3 + 1} = \frac{1}{1} = 1$$
7. **Summary:**
- Domain: all real numbers except $$x = -1$$
- x-intercepts at $$x = \frac{1}{2}$$ and $$x = 1$$
- y-intercept at $$y = 1$$
- Vertical asymptote at $$x = -1$$ due to denominator zero.
This analysis helps understand the function's behavior and key points.
Rational Function Analysis 3F47Fa
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