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

Already signed up?
New to KöMaL?

Problem C. 925. (January 2008)

C. 925. Show that the expression

$\frac{x}{y^3-1}+\frac{y}{1-x^3}+\frac{2(x-y)}{x^2y^2+3}$

has a constant value for all x and y for which it is meaningful and x+y=1.

(5 pont)

Deadline expired on February 15, 2008.

Statistics:

225 students sent a solution.

5 points: 206 students.

4 points: 1 student.

3 points: 1 student.

2 points: 2 students.

1 point: 3 students.

0 point: 5 students.

Unfair, not evaluated: 7 solutionss.

Problems in Mathematics of KöMaL, January 2008

225 students sent a solution.
5 points:	206 students.
4 points:	1 student.
3 points:	1 student.
2 points:	2 students.
1 point:	3 students.
0 point:	5 students.
Unfair, not evaluated:	7 solutionss.