Posted by **Anonymous** on Tuesday, October 30, 2007 at 1:47pm.

f*(x) = lim as h -> 0 [f(x+h)-f(x-h)]/ h

write an equation that expresses the relationship between the functions f*(x) and f`

I know that f` is [f(x+h)-f(x)]/h but i have no clue how to write an equation to relate the two!!!

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