It does help, thank you so much!

I do have to ask though, why isn't the other root used??

& in the first question, ok, I get the first part, and taking the diferent values for k, and I understand in my head because it is bounded below by 0, it must converge to 0, but I don't get the proof? Like, what do I do with

Hint: let

Choose

?Sorry about this, but could you spell it out for me please?I'm never hit such a absolute immovable wall before over a maths topic, but I am not getting sequences at all

and I have this assignment due in soon

Thank you so much for your time and help!