Hello all, I have a bit of a problem at the moment solving this task. I done half of it already, just can solve it for the other half. Hope u can help! Thanks =)
Let where all are independent with distribution, find a relation such that r can be expressed in terms of
Here's my working out so far:
Def of a martingale:
Now because where
From that point im not too sure what to do. If anyone can help me or tell me what to do would be much appreciated. Thanks.