Question 742275
Given that f(x)= x^2-x-3, find the following: 
[f(x+h) - f(x)] / h


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f(x+h) = (x+h)^2 - (x+h) -3
f(x+h) = x^2 + 2hx + h^2 -x-h -3
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f(x) =    x^2    -  x    -3
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f(x+h)-f(x) = 2hx + h^2 -h 
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[f(x+h)-f(x)]/h = 2x + h -1

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Cheers,
Stan H.
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