1. Apr 15, 2010

### tennishaha

when can i put the expectation symbol inside an integral?

under what occasions does this E \int f(x)dx=\int E(f(x))dx satisfy

2. Apr 15, 2010

### mathman

The expectation operator is basically an integral, so you can put it under the integral sign as long as the conditions for interchanging the order of integration hold.