Recent content by phy07

ok sorry.i must write the equation in terms of bessel function.thanks for all your helps... :)

thanks for your help.now i found a result likes the modified Bessel function. \int\limits_{0}^{\infty} e^{-a\cosh θ}\cosh \3 θ {}{} ~ dθ -\int\limits_{0}^{\infty} e^{-a\cosh θ}\cosh \ θ {}{} ~ dθ a:constant but i don't know how to resolve the bessel function.can you show a way?

Homework Statement This is my homework. I couldn't solve the integral. Homework Equations Kv(z) being a modified Bessel function. β=1/kT k: Boltzmann Constant The Attempt at a Solution I made p=m c sinh θ transformation and obtained an integral form as follows...

Ok. Thank you clamtrox.

Homework Statement How can i prove this property of Delta, http://e1204.hizliresim.com/w/d/4bw2j.png Homework Equations This is my homework from John David Jackson's Classical Elektrodynamics book The Attempt at a Solution I can't an attempt. Some properties is proved at wiki and...