zhr 

 by the way I send my  trial solution in recent file named maple 11,but i want from you make check and help me to obtain results,and how can i delete float infinity to be able make minimize

Thanks

How can I send my worksheet to help me in solving problem?   (I used maple 11)

sorry , i forget the term so the question is :

int ( q  * exp((1-b)^2* q_z^2 / lambda[1] ) * exp((1-b)^2* q^2 / lambda[2])   /  ((1+b^2*q^2+b^2*q_z^2)*(q^2+q_z^2)) , q_z= -infinity..infinity)  then w.r.t     q  from (0......infinity)

after integration we want to minimize the results , the range is as (b=0..1), ( lambda[1])  =1....100000) ,   (lambda[2])  =1....100000

 Proff. Alec

I am sorry if  I  made any  trouble for you