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Given $$y(x) = x^x$$, $$x > 0$$. We need to find $$y''(2) - 2y'(2)$$.
Taking the natural logarithm of both sides:
$$\ln y = x \ln x$$
Differentiating both sides with respect to $$x$$:
$$\frac{y'}{y} = \ln x + 1$$
$$y' = x^x(\ln x + 1)$$
Differentiating again:
$$y'' = \frac{d}{dx}[x^x(\ln x + 1)]$$
$$= x^x(\ln x + 1)^2 + x^x \cdot \frac{1}{x}$$
$$= x^x\left[(\ln x + 1)^2 + \frac{1}{x}\right]$$
Evaluating at $$x = 2$$:
$$y(2) = 2^2 = 4$$
$$y'(2) = 4(\ln 2 + 1)$$
$$y''(2) = 4\left[(\ln 2 + 1)^2 + \frac{1}{2}\right]$$
Computing $$y''(2) - 2y'(2)$$:
$$= 4\left[(\ln 2 + 1)^2 + \frac{1}{2}\right] - 2 \cdot 4(\ln 2 + 1)$$
$$= 4\left[(\ln 2)^2 + 2\ln 2 + 1 + \frac{1}{2} - 2\ln 2 - 2\right]$$
$$= 4\left[(\ln 2)^2 - \frac{1}{2}\right]$$
$$= 4(\log_e 2)^2 - 2$$
The answer is Option C: $$4(\log_e 2)^2 - 2$$.
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