/vomit that snack was NO good.
Forgot to expand my answer when you said 'hard to understand in english'
1)Product rule
2)F'' =0
3)either use LN on the term or subst splinter variable for ex example y for x
4)different at F'' >< ? yes so ->
Leads to inflection at -2
But then again I always do mistakes when computing :)
It sounds logic to me.
You forgot: If(when(while(x~*|x|)x;)go x;/x);x;x1
8)
i had a funny formula that ended like that:
happy birthday zak
but it was made to work on the 17th of december only, well... still happy birthday, and many thanks for all this things. What you do is a blessing.