1. **Stating the problem:** We have a piecewise function defined as:
$$f(x) = \begin{cases} \sqrt[3]{x^2(x-1)} & x \geq 0 \\ \frac{x+3}{x^2 + 2x - 3} + 2 & x < 0 \\ a^2 x^2 - 10x - 4 & -1 < x \leq 3 \end{cases}$$
We want to understand the behavior and graph of this function.
2. **Important notes:**
- The function has three branches with different domains.
- The rational expression denominator can be factored to find domain restrictions.
- The quadratic branch depends on parameter $a$.
3. **Analyze each branch:**
**Branch 1: $x \geq 0$**
$$f(x) = \sqrt[3]{x^2(x-1)} = \sqrt[3]{x^3 - x^2}$$
This is defined for all $x \geq 0$ since cube roots are defined for all real numbers.
**Branch 2: $x < 0$**
$$f(x) = \frac{x+3}{x^2 + 2x - 3} + 2$$
Factor denominator:
$$x^2 + 2x - 3 = (x+3)(x-1)$$
So,
$$f(x) = \frac{x+3}{(x+3)(x-1)} + 2 = \frac{\cancel{x+3}}{\cancel{x+3}(x-1)} + 2 = \frac{1}{x-1} + 2$$
Note: $x \neq -3$ to avoid division by zero, but since $x < 0$, $x = -3$ is in domain and must be excluded.
**Branch 3: $-1 < x \leq 3$**
$$f(x) = a^2 x^2 - 10x - 4$$
This is a quadratic polynomial defined on $(-1,3]$.
4. **Summary of domain:**
- Branch 1: $[0, \infty)$
- Branch 2: $(-\infty, 0)$ excluding $x = -3$
- Branch 3: $(-1, 3]$
5. **Graphing notes:**
- Branch 2 has a vertical asymptote at $x=1$ (outside domain $x<0$ so no issue here).
- Branch 2 is undefined at $x=-3$ (hole).
- Branch 3 overlaps partially with branch 1 domain; the function is piecewise defined so values depend on the branch.
6. **Final function description:**
$$f(x) = \begin{cases} \sqrt[3]{x^2(x-1)} & x \geq 0 \\ \frac{1}{x-1} + 2 & x < 0, x \neq -3 \\ a^2 x^2 - 10x - 4 & -1 < x \leq 3 \end{cases}$$
This piecewise function combines a cube root, a rational function shifted by 2, and a quadratic polynomial on specified intervals.
Piecewise Function 55E9B0
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