Mathematical and Physical Journal
for High Schools
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Problem B. 4724. (September 2015)

B. 4724. Solve the inequality \(\displaystyle x+y-xy+\frac{1}{x} +\frac{1}{y} -\frac{1}{xy}\le 2 \) and represent it in the coordinate plane.

(4 pont)

Deadline expired on October 12, 2015.


157 students sent a solution.
4 points:97 students.
3 points:19 students.
2 points:21 students.
1 point:17 students.
0 point:3 students.

Problems in Mathematics of KöMaL, September 2015