Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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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.

### Statistics:

 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