1. **State the problem:** Differentiate implicitly the equation $$x^2 + y^2 = \log(xy)$$ with respect to $x$.
2. **Recall the rules:**
- Derivative of $x^2$ is $2x$.
- Derivative of $y^2$ is $2y \frac{dy}{dx}$ by chain rule.
- Derivative of $\log(xy)$ uses the chain rule and product rule: $$\frac{d}{dx} \log(xy) = \frac{1}{xy} \frac{d}{dx}(xy)$$
- Derivative of $xy$ is $x \frac{dy}{dx} + y$ by product rule.
3. **Differentiate both sides:**
$$\frac{d}{dx}(x^2 + y^2) = \frac{d}{dx} \log(xy)$$
$$2x + 2y \frac{dy}{dx} = \frac{1}{xy} (x \frac{dy}{dx} + y)$$
4. **Multiply both sides to clear denominator and group $\frac{dy}{dx}$ terms:**
$$2x + 2y \frac{dy}{dx} = \frac{x}{xy} \frac{dy}{dx} + \frac{y}{xy}$$
$$2x + 2y \frac{dy}{dx} = \frac{1}{y} \frac{dy}{dx} + \frac{1}{x}$$
5. **Bring all $\frac{dy}{dx}$ terms to one side:**
$$2y \frac{dy}{dx} - \frac{1}{y} \frac{dy}{dx} = \frac{1}{x} - 2x$$
6. **Factor out $\frac{dy}{dx}$:**
$$\frac{dy}{dx} \left(2y - \frac{1}{y}\right) = \frac{1}{x} - 2x$$
7. **Simplify the factor:**
$$2y - \frac{1}{y} = \frac{2y^2 - 1}{y}$$
8. **Solve for $\frac{dy}{dx}$:**
$$\frac{dy}{dx} = \frac{\frac{1}{x} - 2x}{\frac{2y^2 - 1}{y}} = \left(\frac{1}{x} - 2x\right) \cdot \frac{y}{2y^2 - 1}$$
9. **Final answer:**
$$\boxed{\frac{dy}{dx} = \frac{y}{2y^2 - 1} \left(\frac{1}{x} - 2x\right)}$$
This is the implicit derivative of the given equation.
Implicit Differentiation 480Cd7
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