Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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# Problem B. 4711. (April 2015)

B. 4711. Let $\displaystyle f(x)=\frac{4^x}{4^x+2}$. Calculate the value of the sum $\displaystyle f(0/2015)+ f(1/2015)+f(2/2015)+\dots +f(2014/2015)+f(2015/2015)$.

(5 pont)

Deadline expired on May 11, 2015.

### Statistics:

 70 students sent a solution. 5 points: 60 students. 4 points: 5 students. 3 points: 3 students. Unfair, not evaluated: 2 solutions.

Problems in Mathematics of KöMaL, April 2015