Name: Anonymous 2008-09-06 12:52
Sorry to bother again. http://i34.tinypic.com/17wq2u.jpg
Either I'm missing something about dealing with these expressions or this makes no sense whatsoever. I can upload the rest of the question if necessary; it's about transforming the expression "∂2f/∂x2 + ∂2f/∂y2" to the variables g, ρ and Φ where:
f(x,y) is the function in the Cartesian plane
g(ρ,Φ) gives the function in polar coordinates
and
x = ρ cos Φ
y = ρ sin Φ
But the thing in the pic is the only part I don't get.
Either I'm missing something about dealing with these expressions or this makes no sense whatsoever. I can upload the rest of the question if necessary; it's about transforming the expression "∂2f/∂x2 + ∂2f/∂y2" to the variables g, ρ and Φ where:
f(x,y) is the function in the Cartesian plane
g(ρ,Φ) gives the function in polar coordinates
and
x = ρ cos Φ
y = ρ sin Φ
But the thing in the pic is the only part I don't get.