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April 16, 2014

April 16, 2014

Posted by **catherine** on Monday, September 13, 2010 at 7:09pm.

1. f(x) = x^2 + 3x

2. f(x) = 1/x + 1

now what i am confuse with is that there is no value given for x. So how is one suppose to do these problems. please show steps and this is just the 3rd chapter of my calc book so don't use shortcuts that come in the future.

- math -
**TutorCat**, Monday, September 13, 2010 at 7:23pmthis will help you:

tutorial(dot)math(dot)lamar(dot)edu/Classes/CalcI/DefnOfDerivative.aspx

- math -
**Reiny**, Monday, September 13, 2010 at 8:08pmare you using the defn. of

LIm (f(x+h) - f(x)/h, as h ---> 0 ?

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