Problem 13. (1 point) Find the following limits, using l'H\^opital's rule if appropriate $\lim_{x \to \infty} \frac{\arctan(x^5)}{x^8} =$ $\lim_{x \to 0^+} \sqrt[5]{x \ln(x)} =$ Note: You can earn partial credit on this problem. Problem 14. (1 point) Find the area of the surface obtained by rotating the curve from $x = 0$ to $x = 2$ about the $x$-axis. The area is ______ square units. $y = \sqrt{4x}$
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