Forum for the GRE subject test in mathematics.

aas56
 Posts: 29
 Joined: Sun Jun 28, 2009 3:42 pm
Post
by aas56 » Sun Jul 12, 2009 12:09 pm
I have difficutlities to solve these kind of questions for example questionn 44 in GRE9367:
if x is real and P a polynomial function then lim (P(x+3h)P(x3h2P(x))/h^2 as h> 0 =
the right answer is 9P''(x)
how can we get it?

zombie
 Posts: 27
 Joined: Thu Nov 20, 2008 2:30 am
Post
by zombie » Sun Jul 12, 2009 6:00 pm
try L'Hopital's rule