Pentru a obtine 100 de puncte trebuie gasita o metoda mai eficienta de a rezolva aceasta recurenta, lucru realizabil prin transpunerea ei in matrici in felul urmator:

**Nu imi merge sa fac matricile in latex, imi da eroarea asta:" Warning: Cannot modify header information - headers already sent by (output started at /home/infoarena/live/www/views/header.php:98) in /home/infoarena/live/common/log.php on line 309 " **

**Nu imi merge sa fac matricile in latex, imi da eroarea asta:" Warning: Cannot modify header information - headers already sent by (output started at /home/infoarena/live/www/views/header.php:98) in /home/infoarena/live/common/log.php on line 309 "**