could somebody please help me with this question, i really have no idea how to go about doing it? please?
thank you for your help
You are only asked to prove if it works for the first 4 natural numbers. So you wouldn't be completely hard done by to check each individual case!
And
Just try both of these formula and see if they're equal. Once for n = 1, once for n =2, once for n = 3, and once for n = 4.