Good post jw,

But I just removed it because of the math, can you please post a corrected version of it? If you need the old post, I will put it back on if you need to copy it.

PM me, and we can work together to get it corrected, if you want.

I wish that when I make mistakes, my mistakes could be removed this easy, but they are not, I have to go through Agora, and that sometimes takes a long time for them to remove a post. Its a downfall to this site, but maybe a solution can be found in time.