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May 24, 2015

Homework Help: calculus

Posted by Anonymous on Monday, October 29, 2007 at 2:53pm.

For a function f, let f*(x) = lim as h→0 be [f(x+h) - f(x-h)]/h

a) Determine f*(x) for f(x) = cosx
b) write an equation that expresses the relationship between the functions f* and f` where f` denotes the usual derivative of f

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