Mathematical and Physical Journal
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Problem B. 4753. (December 2015)

B. 4753. Prove that \(\displaystyle \sqrt{2x \sqrt{(2x+1) \sqrt{(2x+2) \sqrt{2x+3}}}} < \frac{15x+6}{8}\) for all \(\displaystyle x>0\).

Proposed by I. Deák, Székelyudvarhely

(5 pont)

Deadline expired on January 11, 2016.


152 students sent a solution.
5 points:85 students.
4 points:44 students.
3 points:11 students.
2 points:8 students.
1 point:3 students.
0 point:1 student.

Problems in Mathematics of KöMaL, December 2015