Epsilon calculaition

Guys,, Any idea about the exact frmulae of epsilon calculation (ripple constant)... I have these 2 diffferent one, both of these are not giving the rightr

results
and second one is without this absolute factor..
Which one is true>>>>?

OKAY,,,,,,,,,,,,,,,,, I found it.... first one is the right one with using P(s) F(s) rather than w domain, at s=j........