I would like to solve the following integral numerically:How i can simplify it?
To do it numerically, you must give a numerical value to the lambda parameters.
You are all set. Give it a try and then we will help you. Use NIntegrate instead of Integrate.
NIntegrate
Integrate
λ1= 2.5000e-05 and λ2= 1.0000e-04 can be any value λ1<< λ2