benchmarks.wiki / Public workspace

Omni-MATH / Let R be the set of real numbers. Determine all functions f:R→R such that, for any real numbers x and y, f(f(x)f(y))+f(x+y)=f(xy). [i] · Discussion

Discussing Let R be the set of real numbers. Determine all functions f:R→R such that, for any real numbers x and y, f(f(x)f(y))+f(x+y)=f(xy). [i] · Omni-MATH

Posts

Chronological order within this page.

Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.