Dear Aneetha,
The nature and scope of the Managerial Economics can be seen from the brief outlines given in the attached WORD document. The document also contains the links to each of the term used therein, if you want to know further elaboration of the term. That may make you understand what the Managerial Economis is.
However, the attached PDF document consists of the introduction chapter of a book, which may also make you understand where and how the Managerial Economics is applied.
For more detailed study, you may however need to buy a complete book of some author.
P S Dhingra
Vigilance & Management Consultant
Dhingra Consultancy Group
New Delhi