Expert: Sherman D. - 6/29/2008

Question
QUESTION: Greetings,

Can you please explain to me, that what is "Pythagorian Tripple" and a Sierpinski's Triangle, is actually related to Factorials?


ANSWER: maybe this will help.

http://ptri1.tripod.com/

if not, just google

Pythagorian Triple and Factorials
or
Sierpinski's Triangle and factorials

---------- FOLLOW-UP ----------

QUESTION: ya that was helpful.
Ive got one question more, if you kindly shed some light on that too.

How can I know if a parabolic curve is function or not?  

Answer
if it doesn't pass the vertical line test, which means if you were to draw a vertical line through the graph and that line were to hit the graph more than once, then its not a function.

in otherwords, if you have 2 "x" values that are the same but 2 different "y" values, then it isn't a function.

i put them in quotes so you would know the difference between letters and variables.