Calculus
# Derivatives

Which portion of the ski lift is the steepest?

We know that \(\dfrac d{dx} x^n = n x^{n-1} \).

Is it also true that \(\dfrac d{dx} n^x = x n^{x-1} \)?

\[ \large y_n (x) = e^x \times e^{x^2} \times e^{x^3} \times \ldots \times e^{x^n} \]

For some positive integer \(n\), let \(y_n(x) \) denote function of \(x\) as stated above.

What is the value of the limit below?

\[ \large \lim_{n\to\infty} \left . \frac d{dx} \left ( y_n (x) \right ) \right |_{x=\frac12} \]

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