Thanks Carl,  I will check the program step wise and will be back.  Also I have to make it concise for your understanding.

Regards

A.Q

Thankyou Markiyan and Acer,

I will try to figure out how to solve it, but your suggesstion made my life easier. 

Best Regards

A.Q

Hi  MARKIYAN,

Thanks a    lot for your help.  I used the limit and program is working fine. 

Your help is really appreciated.

Best Regards

A.Q

@Markiyan Hirnyk 

HI Markiyan

There is no x,  its a sterick to represent conjugate.

E = Electric Field

H = Electric field intensity

* = just to show conjugate

 These values include Bessel function.  I am only interested in knowing the command to solve the above equation and evaluate P.

Regards

A.Q

Sootn