Let's take into account the generalized condition.
Let , is a continuous function, then, for any fixed , there holds
Proof:
Assuming a set of continuous random variables which are mutually independent follow an uniform distribution on the interval Owing to is continued for , therefore are also reciprocally independent random variables sequence for any fixed positive integer
Thus
Next, we will get the following formula via the Khinchin's law of large numbers
Hence
After that, according to the Lebesgue's Dominated Convergence Theorem, we have
Whereupon, we finally obtain
As for this question, let , we instantly get