ISI | B Stat | B Math | UGA 2016 | Q29 | sum of series n^2e^-n

ISI | B Stat | B Math | UGA 2016 | Q29 | sum of series n^2e^-n Support the channel:

[meerayadav]

I learnt a new method, thank u sir, but this can also done by using the method which we use to derive arthemeticogeometric series, but we have to use it twice