Question

Detrminati pe n astfel incat fractia n+5 supra 2n+1 sa fie supraunitara.

Answer 1

Fractie supraunitara=>n+5>2n+1
n+4>2n
4>n
n<4
n apartine (-inf ;4 ) fara {-1/2}

Answer 2

$n+5>2n+1\\\\ -n>-4\\ \\ n<4\\ \\ n\in~(-\infty,4)-\{-\frac{1}{2}\}$