\(\int_{0}^{2\Pi}\int_{2}^{4}\frac{( -r^2sin^2\phi cos\phi )}{(z^2+r^2)^\frac{3}{2}}dr d\phi \)
As below:
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It is not loading for me Alan :(
The site seems to be playing up a bit - maybe it will load later ?
Does it load ok for you?
Do you mean the original question or the image in my reply?
Both load ok for me.
It was your reply but I think it is ok again now - I restarted my modem.
I am glad you did that one, thanks :)