LIM (n →∞) (n ^ 2 + 2) / N + kn = 0 for K

LIM (n →∞) (n ^ 2 + 2) / N + kn = 0 for K

k=-1,
(n ^ 2 + 2) / N is equal to n when n →∞, so kn = - n → k = - 1