In this paper, we introduce a new concept of a generalized analytic Feynman
integral combining the bounded linear operators on abstract Wiener space. We
then obtain some Feynman integration formulas involving the generalized
first variation. These formulas are more generalized forms rather than the
formulas studied in previous papers. Finally, we establish a generalized
Cameron-Storvick theorem, and give some examples to illustrate the
usefulness of our results and formulas.