Differentiate Fx 335D4A
1. **State the problem:** Differentiate the function $$f(x) = \frac{x^2 \sin(x) - 23 \log(x^2)}{\sqrt{x}}$$ with respect to $$x$$.
2. **Rewrite the function:** To simplify differentiation, express $$f(x)$$ as
$$f(x) = (x^2 \sin(x) - 23 \log(x^2)) \cdot x^{-\frac{1}{2}}$$.
3. **Recall differentiation rules:**
- Product rule: $$(uv)' = u'v + uv'$$
- Chain rule for logarithm: $$\frac{d}{dx} \log(g(x)) = \frac{g'(x)}{g(x)}$$
- Derivative of $$\sin(x)$$ is $$\cos(x)$$
- Derivative of $$x^n$$ is $$nx^{n-1}$$
4. **Define:**
$$u = x^2 \sin(x) - 23 \log(x^2)$$
$$v = x^{-\frac{1}{2}}$$
5. **Differentiate $$u$$:**
- Derivative of $$x^2 \sin(x)$$ using product rule:
$$\frac{d}{dx}(x^2 \sin(x)) = 2x \sin(x) + x^2 \cos(x)$$
- Derivative of $$-23 \log(x^2)$$:
Since $$\log(x^2) = 2 \log(x)$$,
$$\frac{d}{dx}(-23 \log(x^2)) = -23 \cdot \frac{d}{dx}(2 \log(x)) = -46 \cdot \frac{1}{x} = -\frac{46}{x}$$
So,
$$u' = 2x \sin(x) + x^2 \cos(x) - \frac{46}{x}$$
6. **Differentiate $$v$$:**
$$v = x^{-\frac{1}{2}}$$
$$v' = -\frac{1}{2} x^{-\frac{3}{2}}$$
7. **Apply product rule:**
$$f'(x) = u'v + uv'$$
$$= \left(2x \sin(x) + x^2 \cos(x) - \frac{46}{x}\right) x^{-\frac{1}{2}} + \left(x^2 \sin(x) - 23 \log(x^2)\right) \left(-\frac{1}{2} x^{-\frac{3}{2}}\right)$$
8. **Simplify terms:**
- First term:
$$\left(2x \sin(x) + x^2 \cos(x) - \frac{46}{x}\right) x^{-\frac{1}{2}} = 2x^{\frac{1}{2}} \sin(x) + x^{\frac{3}{2}} \cos(x) - 46 x^{-\frac{3}{2}}$$
- Second term:
$$-\frac{1}{2} x^{-\frac{3}{2}} (x^2 \sin(x) - 23 \log(x^2)) = -\frac{1}{2} x^{\frac{1}{2}} \sin(x) + \frac{23}{2} x^{-\frac{3}{2}} \log(x^2)$$
9. **Combine like terms:**
$$f'(x) = \left(2x^{\frac{1}{2}} \sin(x) - \frac{1}{2} x^{\frac{1}{2}} \sin(x)\right) + x^{\frac{3}{2}} \cos(x) - 46 x^{-\frac{3}{2}} + \frac{23}{2} x^{-\frac{3}{2}} \log(x^2)$$
$$= \frac{3}{2} x^{\frac{1}{2}} \sin(x) + x^{\frac{3}{2}} \cos(x) - 46 x^{-\frac{3}{2}} + \frac{23}{2} x^{-\frac{3}{2}} \log(x^2)$$
**Final answer:**
$$f'(x) = \frac{3}{2} x^{\frac{1}{2}} \sin(x) + x^{\frac{3}{2}} \cos(x) - 46 x^{-\frac{3}{2}} + \frac{23}{2} x^{-\frac{3}{2}} \log(x^2)$$