Recent content by MiSo

Thank you very much for you reply! You mean to make chain rule on this term? 1/r⋅∂/∂r⋅(r⋅∂u/∂r) or ∂2u/∂r2 I ask because when I´ll make a chain rule on ∂2u/∂r2 term, I think, that I have to obtain a Laplace operator for cartesian coord. system...

An attachment...

Hello to everybody, I am solving some examples related to wave equation of shear horizontal wave in cylindrical coordinates (J.L Rose: Ultrasolic Waves in Solid Media, chapter 6), which is expressed as follows: ∇2u=1/cT2⋅∂2u/∂t2 The Laplace operator in cylindrical coordinates can can be...