Polynomial Derivative 7Ee217
1. **State the problem:** We are given the function $F(x) = 3x^4 - 2x^2 + 7$ and we want to analyze or work with it.
2. **Identify the type of function:** This is a polynomial function of degree 4.
3. **Important rules:** Polynomial functions are continuous and differentiable everywhere. The degree and leading coefficient determine the end behavior.
4. **Find the derivative:** To find critical points or analyze the function's behavior, compute the derivative:
$$F'(x) = \frac{d}{dx}(3x^4 - 2x^2 + 7) = 12x^3 - 4x$$
5. **Set derivative to zero to find critical points:**
$$12x^3 - 4x = 0$$
Factor out $4x$:
$$4x(3x^2 - 1) = 0$$
So,
$$4x = 0 \Rightarrow x = 0$$
$$3x^2 - 1 = 0 \Rightarrow x^2 = \frac{1}{3} \Rightarrow x = \pm \frac{1}{\sqrt{3}}$$
6. **Summary:** The critical points are at $x = 0$, $x = \frac{1}{\sqrt{3}}$, and $x = -\frac{1}{\sqrt{3}}$.
This completes the analysis of the function's critical points.
**Final answer:**
$$F'(x) = 12x^3 - 4x$$
Critical points at $x = 0$, $x = \pm \frac{1}{\sqrt{3}}$.