Exponential Derivatives B7Bb40
1. **Problem Statement:** Find the first, second, and third derivatives of the function $$y(x) = e^{6x^2 + 3x - 2}$$ with respect to $$x$$.
2. **Formula and Rules:** The derivative of an exponential function $$e^{u(x)}$$ is given by $$\frac{dy}{dx} = e^{u(x)} \cdot u'(x)$$ where $$u'(x)$$ is the derivative of the exponent function.
3. **Step 1: Define $$u(x)$$:**
$$u(x) = 6x^2 + 3x - 2$$
4. **Step 2: Compute $$u'(x)$$:**
$$u'(x) = \frac{d}{dx}(6x^2 + 3x - 2) = 12x + 3$$
5. **Step 3: First derivative $$y'$$:**
$$y' = e^{6x^2 + 3x - 2} \cdot (12x + 3)$$
6. **Step 4: Second derivative $$y''$$:**
Use product rule: $$y'' = \frac{d}{dx}[e^{u(x)}(12x + 3)] = e^{u(x)}(12x + 3)^2 + e^{u(x)} \cdot 12$$
Simplify:
$$y'' = e^{6x^2 + 3x - 2} \left[(12x + 3)^2 + 12\right]$$
7. **Step 5: Third derivative $$y'''$$:**
Again use product rule:
$$y''' = \frac{d}{dx}\left[e^{u(x)} \left((12x + 3)^2 + 12\right)\right]$$
$$= e^{u(x)} (12x + 3) \left((12x + 3)^2 + 12\right) + e^{u(x)} \cdot 24 (12x + 3)$$
Simplify:
$$y''' = e^{6x^2 + 3x - 2} (12x + 3) \left[(12x + 3)^2 + 36\right]$$
**Final answers:**
$$y' = e^{6x^2 + 3x - 2} (12x + 3)$$
$$y'' = e^{6x^2 + 3x - 2} \left[(12x + 3)^2 + 12\right]$$
$$y''' = e^{6x^2 + 3x - 2} (12x + 3) \left[(12x + 3)^2 + 36\right]$$
These derivatives show how the function changes at different rates and orders.