# Homework Help: Transformation from Cartesian to spherical polar coordinates

1. Nov 29, 2011

### andrey21

Transformation from Cartesian to spherical polar coordinates

In dimensions:

x=r sinθ cos $\varphi$ and y= r sin θ sin $\varphi$ z=r cos θ

Show one example of:

∂z$\alpha$/ ∂xμ . ∂xμ/ ∂z$\alpha$ = δ$\alpha$$\beta$

Now here is my answer:

δyx=(∂y/∂r . ∂r/∂x) + (∂y/∂θ . ∂θ/∂x) + (∂y/∂$\varphi$ . ∂$\varphi$/∂x)

Is this correct? If not where have I made an error... Thank you

2. Jul 18, 2012

### andrey21

Re: Transformation

Just like to pick up in this old thread, still having trouble with the question.

Using what I have already done:

δrθ=(∂r/∂x . ∂x/∂θ) + (∂r/∂y . ∂y/∂θ) + (∂r/∂z . ∂z/∂θ) (1)

Where:

x=r sin θ cos φ and y= r sin θ sin φ z= r cos θ

Would (1) then become:

δyx= = ((sin θ cos φ) . ( r cos θ cos φ)) + ((sin θ sin φ) . (cos θ sin φ)) + ((cos θ) . (-r sin θ))

Then multiply out the brackets and simplify

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook