PeroK's latest activity

Stripping away the ##\lambda##, researching examples of the type: $$\int_0^\infty u^n e^{-u} du$$ I found that this is the gamma...

I see. I assumed the wrong sign must have crept in during the difficult integration bit, not the easy final bit. Putting my water wings...

:welcome:

I am interested in astrophotography and scientific topics. English is not my native language.

It depends on what you mean by "observe". Most of Science 'observations' involve only our direct observation of a reading on an...

Of the four users, only Bill has any authority on this site. I guess the mentors will make a decision when they see your post.

Using the bounds on the definite integral is important in these cases, as it simplifies things considerably. For example, you could try...

All three terms have minus signs there, when you expand it out.

What you posted in post #7 is consistent with the integral calculator answer. It looks like you got a minus sign confused in the final...

Why do you think that's wrong?

I'm not sure why you are calculating an indefinite integral. The first rule of mathematical physics is that the first term in a parts...

I'm struggling to see what you are doing with integration by parts. I applied parts twice, with the initial tern vanishing at both end...

I'm not an experimentalist. Hopefully, someone else on here can give you a satisfactory answer. In the meantime, you could do your own...

So are we! :welcome:

I got my degrees in general physics and geophysics and it’s been a long time since then and I am having a hell of a time finding people...