1. **State the problem:** We need to find \(\frac{dy}{dx}\) for the equation $$2 y^3 + 2 x^2 = 4$$ using implicit differentiation.
2. **Recall the rule:** When differentiating implicitly, treat \(y\) as a function of \(x\), so use the chain rule for terms involving \(y\). The derivative of \(y^n\) with respect to \(x\) is $$n y^{n-1} \frac{dy}{dx}$$.
3. **Differentiate both sides with respect to \(x\):**
$$\frac{d}{dx}(2 y^3) + \frac{d}{dx}(2 x^2) = \frac{d}{dx}(4)$$
4. **Apply the derivatives:**
- For \(2 y^3\), use the chain rule:
$$2 \cdot 3 y^2 \frac{dy}{dx} = 6 y^2 \frac{dy}{dx}$$
- For \(2 x^2\), derivative is:
$$2 \cdot 2 x = 4 x$$
- The derivative of constant 4 is 0.
So the differentiated equation is:
$$6 y^2 \frac{dy}{dx} + 4 x = 0$$
5. **Solve for \(\frac{dy}{dx}\):**
$$6 y^2 \frac{dy}{dx} = -4 x$$
Divide both sides by \(6 y^2\):
$$\frac{dy}{dx} = \frac{-4 x}{6 y^2}$$
Show cancellation:
$$\frac{dy}{dx} = \frac{\cancel{2} \cdot -2 x}{\cancel{2} \cdot 3 y^2} = \frac{-2 x}{3 y^2}$$
6. **Final answer:**
$$\boxed{\frac{dy}{dx} = \frac{-2 x}{3 y^2}}$$
This is the derivative of \(y\) with respect to \(x\) found by implicit differentiation.
Implicit Derivative C097Ae
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