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Find all functions f:\mathbb{R}\to\mathbb{R} such that for all x\mbox{, }y\in\mathbb{R}, we havef(x+y)+f(x)f(y)=f(xy)+(y+1)f(x)+(x+1)f(y)\text{.}

Slični zadaci

#NaslovOznakeRj.KvalitetaTežina
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