Mathematical and Physical Journal
for High Schools
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Problem C. 1249. (October 2014)

C. 1249. Solve the following equation:

\(\displaystyle \sqrt{\frac{\cos {15}^\circ}2 x^2 - \cos {45}^\circ x + \sin {15}^\circ}=3 +4\sin^2 15^\circ.\)

(5 pont)

Deadline expired on November 10, 2014.


140 students sent a solution.
5 points:81 students.
4 points:23 students.
3 points:8 students.
2 points:5 students.
1 point:8 students.
0 point:15 students.

Problems in Mathematics of KöMaL, October 2014