 Things which we have learned with what we are assuming. Those students who go on at the end. It is natural that much better than me in the class. He was very accidentally well. So we scored similar times though. But he was doing better. Anyways, so that he can is a capital of relation. Okay, that's it. Many, many, many questions. So hit something that can be made. And suppose in direction you may be asking only this much is as big as finding the magnetic field. Whatever you discuss till now. But theory is just this much. Why is it that I am differential equation? So if I just tell you that you know, you have to fit it certain that expression. Force little bit and then you will see. Okay, so can you tell one by one based on this expression? If you look at this. Hang on. Okay, so right now. Keep on moving, sir.