yeah thanks, that works now alright :) ok than what about simplifying ln(exp(x)) or exp(ln(x))?

Ah ok, thanks so far. Yeah ok, in future I will post it as equations :) Could you also please look at the other images? I hting there's not that much to type :)

hmmm, yeah, imageshack has sometimes problems ... tough thanks for trying to help. Perhaps try reloading the pages or try the direct links (copy them so that there's no referer sended to imageshack, otherwise, imageshack could block the request):

http://img209.imageshack.us/img209/5969/zwischenablage02kl2.jpg

http://img209.imageshack.us/img209/2313/zwischenablage03pa4.jpg

http://img209.imageshack.us/img209/3324/zwischenablage025nx4.jpg

thanks!