I have another post about sequences but this question seems easier (hence why I posted it here!).
However, "easier" is used relative to the other question I am stuck on (posted in Advanced Algebra).
The problem is:
All the equations I have tried have failed. I can't think of a method to do this question properly =(Think of an example to show that the statement,
is false, even if for all n
Any ideas would be greatly appreciated!