IMC 2015 · Problem 7

Day 222nd IMC · Blagoevgrad, Bulgaria

Statement

Compute

limA+1A1AA1xdx.\lim_{A \to +\infty} \frac{1}{A} \int_1^A A^{\frac{1}{x}}\,\mathrm{d}x.

Official solution

Hidden so you can work on the problem first.

Proposed by Jan ’ustek, University of Ostrava.