/ __________ ______________\ | / 2 / 2 | lim \\/ 4 + 3*n - \/ 5 - n + 3*n / n->oo
Limit(sqrt(4 + 3*n^2) - sqrt(5 - n + 3*n^2), n, oo, dir='-')
___ \/ 3 ----- 6