Question

Calculati partea intreaga a numerelor:
1. $\sqrt{ n^{2}+5n}$
2. $\sqrt{ 4n^{2}+n}$
Daca puteti sa si explicati...

Answer 1

2.4n²≤4n²+n<4n²+4n+1⇔(2n)²≤4n²+n<(2n+1)²⇔2n≤√4n²+n<2n+1⇒[√4n²+n]=2n
1. Se procedeaza la fel ca la exercitiul2.
Succes!