Uni Stuff > Mathematics
Vector Calculus
kamil9876:
--- Quote from: QuantumJG on October 02, 2010, 03:52:10 pm ---Well I have the limits of integration ( 0 < r < R, 0 < θ < π, 0 < φ < 2π ).
But it's the ugly bit inside that's annoying me! Does r2sinθ*(x2 + z2) simplify to something nice?
--- End quote ---
Actually maybe try to use cylindrical co-ordinates, that way that bit is just merely
Tho with what you have now, you have to find something to change to something nice using trigonometry. or . I forgot which letter corresponds to which angle.
TrueTears:
phi for angle made with z axis.
theta for angle made with positive x axis.
Ilovemathsmeth:
thanks for the advice azureblue :)
i dunno about corporate law, pbl kinda scarred me for life... haha
/0:
--- Quote from: TrueTears on October 02, 2010, 10:03:01 pm ---phi for angle made with z axis.
theta for angle made with positive x axis.
--- End quote ---
That's the way I always used to do spherical, until I read Griffiths electrodynamics. Now I use for angles with the x-axis in cylind and spher, unless it's only 2D in which case I use . Makes no sense, but whatever... when in Rome
TrueTears:
Lol yeah hate it when conventional gets changed ><
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