Re: differentiation. Reply

On Wednesday 09 January 2002 10:59 am, you wrote:

diff f x = (f (x + epsilon) - f (x - epsilon)) / (2 * epsilon) where epsilon = 0.00001

every call to say "diff sin" will cost you about as much as every call to "sin"

s/every call to "sin"/two calls to "sin"/ of course Alec