Thread: Formal derivative
View Single Post
  #1  
Old November 13th, 2008, 07:50 AM
tttcomrader tttcomrader is offline
Super Member
  
Join Date: Mar 2006
Posts: 629
Country:
Thanks: 255
Thanked 6 Times in 6 Posts
tttcomrader is on a distinguished road
Default Formal derivative
For a polynomial f(x) reduce \frac {f(x)-f(z)}{x-z}, substitute Z in for X. Show that this is f'(x).

From calculus I know that as the lim x approaches z that is the derivative, but if I just substitute, how would I compute that? Thanks.
Last edited by tttcomrader; November 13th, 2008 at 12:42 PM.
Reply With Quote