prosze o pomoc
przemek: Oblicz granicę :
an= 3√n3 + 3n − n
25 lis 16:52
ror: (a−b)(a
2+ab+b
2)=a
3−b
3
| (3√n3+3n−n)((3√n3+3n)2+n3√n3+3n+n2) | |
| = |
| (3√n3+3n)2+n3√n3+3n+n2 | |
| | n3+3n−n3 | |
= |
| = |
| | (3√n3+3n)2+n3√n3+3n+n2 | |
| 3n | |
| |
| | 3 | | 3 | | n2((3√1+ |
| )2+3√1+ |
| +1) | | | n2 | | n2 | |
| |
lim=0
25 lis 18:06