Recent content by boarie

Dear gurus Can anyone kindly enlighten me how to go abt solving the attached equation expressed in spherical coordinates? basically, it describes the magnetic field in the radial direction with r,theta and phi denoting the radius, polar and azimuthal angles. My problem is that I do not...

Roger on that... Thus I shld perfom A dot del: (\vec{A_{x}} \frac{\partial }{\partial x} + \vec{A_{y}} \frac{\partial }{\partial y} + \vec{A_{z}} \frac{\partial }{\partial z}) which gives me a scalar. And multiply with vector F? ((\vec{A_{x}} \frac{\partial }{\partial x} +...

hi Hurkyl My apology for not being clear.. is it wrong to state the result as: (\vec{A_{x}} \frac{\partial \vec{F_{x}}}{\partial x} + \vec{A_{y}} \frac{\partial \vec{F_{y}}}{\partial y} + \vec{A_{z}} \frac{\partial \vec{F_{z}}}{\partial z})

hi Hurkyl Thx for your advice.. thus may i know, if we are to take the del operator with A and then apply to F, the resultant will be: (\vec{A1} \frac{\partial \vec{F1}}{\partial x}... ?

May i know what if f is a vector? (\vec A \cdot \nabla) \vec F is this equivalent to \vec A (\nabla \cdot (vec F)).

hi J77 Thx for your reponse.. appreciate your advice... In fact, the solution to the above is given as attached... I can't seem to derive to the stated form... :cry: Would really appreciate if any guru can shed some light... :redface:

Dear all I'm a newbie here...having some prob and hope to have your expert advice on how to solve the equation attached. Thx in advance!