A pair of months ago I downloaded a package that can be used in mathematica. It is a special package for high energy physics and one of the commands can be used to solve a group of diferential equations that are important for the topic. I can use this comand and save the result in a new variable in order to plot this but the real problem appear when I want to know the real value of the function evalueted in a particular point of its independent variable. To solve these equations I didn't have to use the command DSolve or NDSolve but instead I use a special command of the package, however I think it is similar to a NDSolve. When I try to get the numeric value of the solution I get a large thing with something with the name of InterpolationFunction, I saw the wolfram manual and I cannot still get the numeric result. How can I work with this in order to get the numeric value?