Sorry, but it's not quite clear. Where does the upper limit on the second integral come from and where does the constant in the last expression come from??
Sorry, but it's not quite clear. Where does the upper limit on the second integral come from and where does the constant in the last expression come from??
Use the fact that for a Lebesgue integral , to get the first step, the second clearly comes since for each it's evidently true that then the last step comes from the fact that on