Derivative Product 03C95A
1. **State the problem:** We need to find the derivative of the function $$F(x) = (6x^2 + 2x)(3x + 2)^2$$ with respect to $$x$$.
2. **Recall the product rule:** For two functions $$u(x)$$ and $$v(x)$$, the derivative of their product is given by:
$$\frac{d}{dx}[u(x)v(x)] = u'(x)v(x) + u(x)v'(x)$$
3. **Identify $$u$$ and $$v$$:**
Let $$u = 6x^2 + 2x$$ and $$v = (3x + 2)^2$$.
4. **Find $$u'$$:**
$$u' = \frac{d}{dx}(6x^2 + 2x) = 12x + 2$$.
5. **Find $$v'$$:**
Use the chain rule for $$v = (3x + 2)^2$$:
$$v' = 2(3x + 2) \cdot \frac{d}{dx}(3x + 2) = 2(3x + 2)(3) = 6(3x + 2)$$.
6. **Apply the product rule:**
$$F'(x) = u'v + uv' = (12x + 2)(3x + 2)^2 + (6x^2 + 2x)6(3x + 2)$$.
7. **Simplify:**
First term: $$(12x + 2)(3x + 2)^2$$
Second term: $$6(6x^2 + 2x)(3x + 2) = (36x^2 + 12x)(3x + 2)$$
8. **Expand second term:**
$$(36x^2)(3x) + (36x^2)(2) + (12x)(3x) + (12x)(2) = 108x^3 + 72x^2 + 36x^2 + 24x = 108x^3 + 108x^2 + 24x$$
9. **Final derivative expression:**
$$F'(x) = (12x + 2)(3x + 2)^2 + 108x^3 + 108x^2 + 24x$$
This is the derivative of the given function.