The questions asks ...

Suppose that , , and

,

Prove: For , and

MY attempt at a solution:

I really don't know how to go about this... at first i tried to show that if is true then .

So that means

My problem is that i don't know how big R in comparison to , so unless i restrict R to be less than i can't prove that

Basically, i need help with this question... can anyone help ?

I'm doing a self study by myself so i would appreciate a detailed solution if possible.. please and thank u.