** Next:** Expectation of a function
** Up:** Computing the expectation of
** Previous:** Feedforward equations

Let us define . Taking
expectation over from equation 4
yields

| |
(6) |

and expectation from equation 5 yields

We have dropped the subscripts from the expectation operators, but
they are always taken over .

*Harri Lappalainen*

*5/19/1998*