Menu Close

lim-n-k-1-n-k-2-1-k-2-4-




Question Number 215051 by MrGaster last updated on 27/Dec/24
                    lim_(n→∞) Π_(k=1) ^n ((k^2 +1)/( (√(k^2 +4))))=?
$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\underset{{n}\rightarrow\infty} {\mathrm{lim}}\underset{{k}=\mathrm{1}} {\overset{{n}} {\prod}}\frac{{k}^{\mathrm{2}} +\mathrm{1}}{\:\sqrt{{k}^{\mathrm{2}} +\mathrm{4}}}=? \\ $$$$ \\ $$
Answered by MathematicalUser2357 last updated on 28/Dec/24
lim_(n→∞) Π_(k=1) ^n f(k) is totally divergent if −1<lim_(k→∞) f(k)<1 is not true. see graph below
$$\underset{{n}\rightarrow\infty} {\mathrm{lim}}\underset{{k}=\mathrm{1}} {\overset{{n}} {\prod}}{f}\left({k}\right)\:\mathrm{is}\:\mathrm{totally}\:\mathrm{divergent}\:\mathrm{if}\:−\mathrm{1}<\underset{{k}\rightarrow\infty} {\mathrm{lim}}{f}\left({k}\right)<\mathrm{1}\:\mathrm{is}\:\mathrm{not}\:\mathrm{true}.\:\mathrm{see}\:\mathrm{graph}\:\mathrm{below} \\ $$
Commented by MathematicalUser2357 last updated on 28/Dec/24
$$ \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *