Zgjidhja e ushtrimit 6

Një varg numerik përcaktohet nga formula $u_n = n^2 + 2n - 1$.

Gjej 6 kufizat e para të këtij vargu.

$u_1 = 1^2 + 2(1) - 1 = \ldots\ldots\ldots\ldots$

$u_2 = (\ldots)^2 + 2(\ldots) - 1 = \ldots\ldots\ldots\ldots$

$u_3 = (\ldots)^2 + 2(\ldots) - 1 = \ldots\ldots\ldots\ldots$

$u_4 = (\ldots)^2 + 2(\ldots) - 1 = \ldots\ldots\ldots\ldots$

$u_5 = (\ldots)^2 + 2(\ldots) - 1 = \ldots\ldots\ldots\ldots$

$u_6 = (\ldots)^2 + 2(\ldots) - 1 = \ldots\ldots\ldots\ldots$